Don't really agree with Stoutland in B-rank...I get that this is not about comparisons, but let's forget that and compare it with Venusaur. It's unable to boost, it's predictable, it's frail (weakness to Mach Punch, which is the bane of high speed mons, plus neutrality to everything else), and it's extremely limited in item choices (I always see band, maybe LO can work but that will cut even shorter its life span and make priority revenge killing a breeze). Venusaur has diverse movesets, resistances to some common attacking types, can recover lost health, can easily get to +2 in its own weather. Not saying that Stoutland is bad (I even played and appreciated quite a bit TGMD's team), but I still see it as a niche poke that's best suited for C-rank.
Not accepting rating requests anymore. Sorry!