Which is more impressive?
I'm going with The Beatles because even though they have an advantage of being white guys they still were able to become the biggest group of all time without social media and without YouTube. Sure they had television in the 60s but it wasn't no where near reaching its hey day like it did in the 80s and 90s. Plus the music itself played a big role in their "intergalactic dominance" cause they even sent Beatles music into space for alien contact.
BTS on the other hand was at the right place at the right time cause of 2nd gen spreading kpop globally and YouTube and social media peaking right when they became famous. Without these three events I don't see BTS becoming much. Maybe 2pm level.
What do you think?