AFK hardly ever gets first place even though it has an overall good average placement. It's part of the group of heroes I hate most in Battlegrounds. Heroes that are really good in the early to mid game and fall off as soon as they encounter even a semi-real build. They are so stupid because they force out other players who have a chance to get to the late game with something that is complete shit and won't even win.
C'Thun is the worst offender by far, but the top 4 heroes on HSReplay (top 50% MMR) are those types of heroes right now. I mean just look at the placement curves for them. It's degenerate.
Maybe stop thinking about "winning" in Battlegrounds as getting first place. You win if you place top 4, and a build that consistently guarantees you top 4 is not "complete shit" but a strong build.
No, a win is a win. Second through fourth is just a consolation prize so people don't get fed up an leave the game mode. And no those builds are not strong. They cannot compete with an actual build. I saw it myself playing AFK as I mentioned in my other post on here.
If you want to gain MMR that's fine, but that's not winning. Any fool with enough experience in Battlegrounds can put together something that just gets fourth place and gains them MMR. And it turns out there are lots of heroes that facilitate that with degenerate hero powers and buddies.
Ever since auto chess came out, making top 4 was considered victory, but whatever floats your boat.