Melon is still the biggest chart out there and the movement in the top 10 hasn’t changed much since months already. It’s actually really boring to see. Ofc it will also affect gaon’s chart too
Cheer Up is the highest charting female idol song on melon’s decade chart. It is way too soon to claim LSG can surpass that already
Melon is 34 percent of the market. Melon's market share has been going down, and other charts have been rising. However, Gaon is indicative of all of Korea's streaming platforms, which shows more movement in the top 10. Gaon hasn't changed in years, so its a lot better to use when comparing past songs.
CU benefited from the time of its release being earlier. Any song from much later was at a big disadvantage and it would be disingenuous to claim otherwise.