Keiji Inafune on M9N said:
Inafune-san said "You know, I want to word this in a way to explain some of the issues that come with trying to make a game of this size on different platforms." He's like "I'm kind of loath to say this because it's going to sound like an excuse and I don't want to make any excuses. I own all the problems that came with this game and if you want to hurl insults at me, it's totally my fault. I'm the key creator. I will own that responsibility."
He said "In my many years at Capcom, and Capcom was known for their multi-platform strategy. But never did they ever do 10 SKUs all at the same time, 10 different versions all for one title." Traditionally, this is true—I know, we worked with a lot of different porting houses—usually you have the base game and work on the port after the game was done. In this case, it was do the base game and do the port all at the same time. it ended up being a huge amount of work, more than they actually estimated. Definitely, when they looked at the project, they were wrong about a lot of things. They underestimated how much time, work was going to be necessary. All of those things create a huge amount of pressure.