Both these things are myths. Often repeated myths but still.
First off MvC2 and 3rd Strike are horribly unbalanced games that have been popular a long time. This is true. That doesn't mean that's what people want. Both were released at the tail end of the fighting game 90s and they were the only viable games during the 10 year drought until SFIV. Don't think people love having to choose between Chun and Yun or sticking to one of four characters in MvC2.
Second MvC2 worked by accident. There's a lot of great comments from the estimable Mike Z on the issue, but MvC2 basically worked out because in the god tier you still have all the basic playstyles represented. You have Zoning (Cable), Hard Rushdown (Magneto), Soft Rushdown/Hit and Run (Storm) and Spacing/Heavy play (Sentinel). That was a happy accident and allowed for players who wanted to play a particular type of game to still play it even when they couldn't play the character they most liked.
Second I think even if you could work out the sales over time, I believe SFIV outsold both and that's a game that has pretty good balance. In fact the times when people have enjoyed it the most and the tournament scene has been most healthy is when the game was at its most balanced with SSFIV and AE2012. In fact people are happy the game is getting yet another balance pass.
As for the Justin thing that's completely wrong. I could trawl through his twitter, but he was an early defender of leaving Sentinel as is, and produced a ton of videos showing both Sentinel's weaknesses and Wolverine's strengths. In fact he was one of the first people to declare that Wolverine was tip top tier and not mid as a lot of early players thought.
The only thing he didn't predict correctly was the tier shift caused by the DHC Glitch, but seeing as how that was a glitch that really did nothing except make it extraordinarily simple to kill people with one bar (even by Marvel standards) I don't see how it was a positive.
Check the date on this if you don't believe me:
http://torontotoptiers.com/marvel-vs-capcom/frame-advantage-in-the-lab-with-justin-wong/
Finally if you love unbalanced games, good for you. I can see you play Superman and "Bane." (Wink Wink) But personally I don't like losing my matches at the character select. I can live with some nasty matchups but suggesting that a game is better if the top tier invalidates the bulk of the cast seems a bit silly.
Plus isn't it a waste to have all those other characters on the select screen? It coulda been $15 if you only got Black Adam, Superman, and Aquaman. (Assuming the going rate of $5 a character.)
