It does indeed show that TLOU sold 8.15M on PS3 alone and 11.78M on PS4 alone.
But that's still "just" 19.93M in total explaining JRPGfan's "probably not quite yet". Furthermore, the numbers are estimates from Marth as you can see in this post. They seem to be pretty spot on though.
Christ on a bike, those are MP shooter X numbers, better than most in recent years. TLOU2 could rival LT numbers of PS exclusives in it's first few weeks.
Everything in the above reply is my opinion, from my own perspective and not representative of reality outside of my own head!
-Android user, please be gentle with critique on my spelling.