People complaining about MvC3 being "too easy" are morons.
The execution barrier being lowered is a good thing. It's called making the game more accessable. This allows many more players to be able to jump right in and start playing. MvC2 and 3s can easily turn off new players because they are so complex and difficult. MvC3 and SSF4 are much easier to get into and aren't so scary to newcomers.
Also just the internet and it's angry nerd syndrome and bitch bitch bitch nothing is ever as good as the original bitch bitch bitch some more. As bad as SRK and some of the scene is, at the end of the day 99% are behind the games, the scene is no where near as bad as the Smash scene. People may complain but at the end of the day MvC3 is mad fun and the vast majority is majorly behind the title. Capcom makes good fighting games, and this one is excellent. It will be played, and it will be hype.