>>31212390Charizard is quad weak to Stealth Rock, which alone is a huge disadvantage. On top of that, 100 base speed and 109 Sp. Atk arent anything special anymore, and its bulk isnt enough to save it. All in all, its just too weak to common attacking types, can lose half its health on switch in, and is neither bulky enough to tank hits nor fast and powerful enough to outspeed and eliminate threats. Of course, its Megas make up for a lot of its shortcomings, but OP was ignoring megas.
As for the other three:
Samurott has good mixed attacking stats at the cost of meh speed, bulk, and movepool. Most Grass types can deal with it, and anything fast and strong can take it out with a super effective hit.
Meganium is bulky, but its bulk isnt amazing enough to cover for grass being a terrible typing on its own. Plus, its a pretty meh mixed attacker and mwh speed. Plus, there are other mons that get pretty much the same support moves it has but better with types, stats, and abilities.
Torterra has similar bulk but more killing power than meganium, but is really slow, weaker on its special side, and while the ground type gives it offensive abilities, it adds both more resistances and more weaknesses, while not helping with the ones grass already had other than poison. As such, a strong special fire, flying, or especially ice move can revenge kill it.
All in all, none of them have rediculously strong stats, abilities, or movepool choices that make up for their shortcomings, and dont offer a niche that isnt already covered by something better with the above things.
