I don't follow MHA and his profile is kind of really bad. What is his actual baseline level of strength in the current arc? Because this fight is baseline v baseline. Echidna doesn't have practical mid-battle absorption. If she did, she'd just do that and win. But I don't remember her ever eating people while fighting them (as her fight is 90% people doing no damage vaguely in her direction). The only stat he clearly beats her in is speed, his durability is based on striking, his striking strength is 'at least the same based on ????' and varies with powers he's not using here.
Its baseline for him because what we do know with echnidna is her growing big and strong and monstrous was a slow process. He keeps powers for 10 mins. She's strong because she's big because she absorbed mass over time with her power, then mutated it. He's not copying her strength which is a tertiary result of her power, just the power itself. A power that only works on humans for her because she's huge by this point. He won't be huge. He'd only be able to absorb like rats or maybe a single dog. If there's anything around to absorb, she's doing it better and winning. If not, its just a fight where neither of their copy abilities matter at all where one participant seems to have entirely arbitary stats (durability scaled off striking strength seemingly just made up).
I'd go incon purely because his profile isn't good enough to judge his capabilities.
SHe can't power null without eating people, all her hax is, essentially, based on her having already won the fight. Until she wins she's just a mass of flesh.
