It's probably BTS then Seo Taiji but I could be wrong
Seo Taiji is #1 if you divide it by total releases.
They only ever had 4 releases in their career.
While BTS has not only many Korean releases but also JPN releases.
Average Sales counts will ALWAYs benefit those that have less releases.
Okay so I tried doing it for Boy Groups who have sold 3M in total and above.
I did Korean Sales and Korean + JPN Sales lists and the Oricon lists of the same groups.
Data from: KOREAN SALES @koreansales_twt - Google Sheets
For the Korean Sales: The number of "releases" is equal to how they are counted by Gaon and their certification system.
Korea
1. Seo Taiji and Boys - 2,015,875 (4 releases)
2. BTS - 1,551,197 (18 releases)
3. H.O.T - 781,018 (9 releases)
4. 015B - 772,965 (4 releases)
5. NCT - 699,518 (5 releases)
6. Wanna One - 604,097 (6 releases)
7. DJ DOC - 520,070 (10 releases)
8. god - 452,705 ( 12 releases)
9. NCT Dream - 437,679 (9 releases)
10. Turbo - 418,901 (8 releases)
11. EXO - 383,201 (31 releases)
12. Seventeen - 364,763 (18 releases)
13. Sechskies - 331,977 (12 releases)
14. NCT127 - 265,220 (12 releases)
15. Got7 - 232,927 (17 releases)
16. TVXQ - 155,301 (26 releases)
17. Shinhwa - 155,051 (23 releases)
18. Super Junior - 153,247 (30 releases)
19. Shinee - 101,745 (27 releases)
20. Bigbang - 96,309 (26 releases)
Korea + Japan
1. Seo Taiji and Boys - 2,015,875 (4 releases) - NO JPN releases
2. H.O.T - 781,018 (9 releases) - NO JPN releases
3. 015B - 772,965 (4 releases) - NO JPN releases
4. BTS - 772,436 (41 releases) - 23 JPN releases
5. NCT - 699,518 (5 releases) - NO JPN releases
6. DJ Doc - 520,070 (10 releases) - NO JPN releases
7. god - 452,705 (12 releases) - NO JPN releases
8. Wanna One - 423,314 (9 releases) - 3 JPN releases
9. Turbo - 418,901 (8 releases) - NO JPN releases
10. NCT Dream - 399,927 (10 releases) - 1 JPN release
11. EXO - 363,555 (34 releases) - 3 JPN releases
12. Seventeen - 356,224 (23 releases) - 5 JPN releases
13. Sechskies - 306,698 (13 releases) - 1 JPN release
14. NCT127 - 230,403 (15 releases) - 3 JPN releases
15. Got7 - 163,338 (27 releases) - 10 JPN releases
16. Shinhwa - 144,040 (25 releases) - 2 JPN releases
17. TVXQ - 128,964 (93 releases) - 68 JPN releases
18. Super Junior - 115,047 (49 releases) - 19 JPN releases
19. Shinee - 91,084 (49 releases) - 22 JPN releases
20. Bigbang - 76,943 (50 releases) - 24 JPN releases
Japanese Sales (groups with no JPN releases were obviously excluded)
1. Seventeen - 325,485 (5 releases)
2. BTS - 162,972 (23 releases)
3. EXO - 160,549 (3 releases)
4. TVXQ - 118,894 (68 releases)
5. NCT127 - 91,132 (3 releases)
6. Shinee - 78,000 (22 releases)
7. Wanna One - 61,747 (3 releases)
8. NCT Dream - 60,158 (1 release)
9. BigBang - 55,962 (24 releases)
10. Super Junior - 54,730 (19 releases)
11. Got7 - 45,036 (10 releases)
12. Shinhwa - 17,422 (2 releases)
13. Sechskies - 3,350 (1 release)
Observations:
1. Its easier to have a higher average with less releases for both the Korean sales list, the korean + JPN sales list and the JPN sales list.
- Having more releases resulted in a lower average most of the time
- Having less releases resulted in a higher average most of the time.
2. On the Korea + JPN List, it benefited having LITTLE to NO JPN releases for many acts.
3. 1st Gen sales were extremely high overall.
Most Important Takeaway for me looking at these numbers:
- You MUST Look at the Context of the numbers.
- Having more releases --> Decreases the artists averages.
- Does not give an accurate measurement of popularity if you don't look at the context of them.
Afriyieau1 here you go
Gaon tracks shipments so I think its all the albums sent to stores (someone correct me if I'm wrong tho)
you are correct
I’m still waiting for boy groups section. They are the ones that pull in the physicals so I’m interested in that more
i can do it in a bit. Might take some time but i'll do it.
They have literally been all over Korea promoting non stop what lol.
You do realise this thread is about Dolphin.....their b-side that went viral.
AHHHHHHHHHHHHHHHHHHH
ALSO JULY 9th.....................thats in literally 1 month.
Amazing. BTS are an absolute WALL!!! Living Legends!!!!
Also congrats to the groups who managed to chart for the first time this year or managed to create new peaks for themselves!!!!!
Almost a half of non-BTS entries are from this year
Interesting. There definitely seems to be an overall shift.
Could maybe end up top 5. But Top 10 seems certain.
Their last album charted at #25. This will be their 4th album charting on the bb200 after
The Dream Chapter: Star (debut album)
minisode1: Blue hour - #25 peak and spent 2 weeks on the chart
Still Dreaming - JAPANESE ALBUM (only other act to chart a jpn album after bts)
and now The Chaos Chapter: Freeze will likely give them a new peak within the Top 10!!!!!!!
Gosh these boys are just growing....its insane to watch
The TXT updates are being quite but I found this on Twitter. Lmao This is so satisfying.
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Yeah I saw that earlier today! Amazing!
All 3 groups are absolutely killing it ngl
Spring Day - 4 wins
Fire - 3 wins
I mean for how MASSIVE Spring Day is..... 4 wins seems pretty small.
in comparison even INU and Run got 5 wins each
what do you classify as few wins...??? 0-4?
I WILL NOT SURVIVE THE BOSS THE KING HIMSELF PERFORMING DAECHWITA LIVE!!!!
IT'S NICE KNOWING Y'ALL
SAMEEEEEEEEE 
Its not that hard for BTS pretty much every single will get 1 due to website downloads.
I'm clueless about US billboard chart. Promo aside, is there any benefit by playing TXT songs on US radio? Will it affecting BB charts?
It counts towards the songs (hot 100) chart.
here is a prediction sheet for the hot 100 right
at the top you can see the orange, green and blue columns have the different aspects that count towards the hot 100 chart
Streams (Spotify, YT, AM etc)
Sales for the song itself (iTunes etc)
Airplay <---- THIS IS RADIO and this is where US radio airplay is helped
One other thing i find insane is especially in the past year (since dynamite basically) is the ability for their songs to do well in Korea with little to no korean promo.
i mean dynamite's first performance in korea was literally after it had won its first soty 
SLR is another example of this. (like we got 1 tiktok and 1 tweet of this song and its still chilling in the top 30 of melon).
Melon 24Hits especially has become quite dependent and charting stats there is helped tremendously by korean promo on variety shows and even music shows.
BTS have managed to chart their songs extremely well without this promo which just shows that people are there and ready to check out their music as its released.
