The BfA Season 1 Drake was basically free for anyone who had a halfway decent grasp of 3v3.
Season 1 had a serious Rating inflation, combine that with the fact that you get a Gladiator mount now for 50 wins at or above 2,4k in Rated 3v3, you could have gotten the Glad Mount rather easily.
I've killed Jaina and G'huun Mythic rather early and getting the BfA S1 Drake was still more difficult to me (despite this, i finished BfA S1 on like 2,6k in 3v3).
In PvE, you can laser focus on your shit and succeed, in 3v3, you need to have far more awareness on multiple things.