It doesnt matter if a pokemon isnt relevant in the meta. That is a horrible argument. Tangrowth is irrelivant in this meta, lets derank him, shall we? No, it doesnt work like that at all, guys.
Ok i think its time this needs to be fixed z_z
AV tangrowth is fantastic and underrated as hell, it checks a metric ton of crap and has a wide movepool to help it lure a variety of things, as well as decent offensive presence in general.
Lets see what this baby checks off the bat: Landorus, Thundurus, Azumarill, Keldeo, Breloom, dragonite, garchomp, excadrill, tyranitar, Mega gyarados, raikou, rotom-w, lando-t, Terrakion, Diggersby, Mega Diancie, non ice beam Manaphy, Mega manectric, non bug-bite mega scizor, mega sharpedo, kabutops and mega swampert.
Yeah.
Just take that in.
Of course, you need some specific moves to cover everything i've listed, like hp ice for dragonite/garchomp, and you can't check sludge wave landorus or hp flying thundurus, Cb azu, SD LO loom, CB nite, LO iron head flinches from exca, CB fire punch ttar, Specs HP ice from raik, CB CC terrak, LO diggers, and ice fang pedo all annoy tangrowth, so needless to say there are a few sets that these pokemon can carry to blow past tangrowth, but as i said, it CHECKS, not COUNTERS all of these pokemon (that'd be insane)
And it does indeed counter a good chunk of these pokemon, like mega diancie, raikou (earthquake), swampert, rotom-w, mega sharpedo, mega gyarados, keldeo, kabutops, and non-ice beam mana are all pretty much hard countered by tangrowth.
Oh but of course, the fun doesn't end there. Tangrowth can use moves like knock off, hidden power ice, hidden power fire, rock slide, and earthquake (giga drain is mandatory) to lure and check a variety of crap. Rock slide lures in talon, eq lures heatran, hp fire lets u beat ferro and lures scizor, etc etc. Your power isn't fantastic but you deal enough damage that the mons are nearly useless anyways. not to mention you get to choose 3 of those 5, not one or something.
Also, if you decided to not like assault vest, you can just run sleep powder with leftovers, so while you dont' check as much shit as you do with AV, sleep powder gives tangrowth a whole other dimension you need to worry about. It could eq your tran, but if you wanted to scout that, it could put ur lati to sleep for example. Its obnoxious to play around, to say in the least.
And last but not least, you have regenerator, which heals you back up when you switch. Unfortunately, you're forced out quite often because you lack the power to OHKO your targets, but regenerator in itself is a boon for tangrowth as an AV user, as you can absorb u-turns and volt switches for days for your team and not worry about hazards too much.
needless to say, tangrowth checks and lures an incredible amount of stuff for balanced teams (where i'd use it), so it definitely deserves B, if not B+
(btw i used 248 hp/56+ def/204 sdef for my calcs, i don't remember what 56+ does but its something important lol)