Okay, I know I've mentioned this before, but people treating you like crap for playing Samus even though they play Mewtwo really needs to stop. It's bad enough when people act like an ass just because of your character, but playing Samus against Mewtwo is a whole different story already without people going out of their way to rub it in.
There aren't a lot of tools Samus has that are better than Mewtwo's, and a lot of them Mewtwo actively counters on top of that, so I see no reason for people to get salty at all. Infact, the one thing people hate about Samus, I'd argue Mewtwo is better at too, which makes the whole thing even more frustrating.
Honestly, feel free to be salty at any other time against Samus, she has good tools that can really mess with players, especially those who are inexperienced in the MU, but when you're playing the objectively better character, not only in the MU, but I'd say in the game in general, you can't cry about me playing Samus (Yes, even when you keep getting hit with charge shot.).
(Also, can we get rid of the 'Spamus' stigma in general? It doesn't make sense, there are literally no moves Samus can safely spam. I know it's kinda a joke, but people take it seriously, and it's reaaal damn irritating.)