The games sound like crap, all of them.
Mirra - From the looks of the videos, this game did was Mirra 2 did not, made a good BMX game. But by throwing in nudity, you lost the core BMX fanbase, the teenagers. See, mommy goes to buy Mirra 3, but sees Mirra XXX. Mommy was a little slut when she was younger, knows what XXX is. Considering State of Emergency came with a chick ID sticker, Mirra XXX might as well just make the sticker the boxart. "DVD-quality footage of real strippers taking it all off... uncensored!" There there Billy, you're 13, all grown up, i think you can handle it. Ya... right

"Mom! Can we go back, my controller's all sticky!" Nudity in this game has no purpose, at all.
DOA - This didn't look like that great of a volleyball game to start, but I'd be willing to play it. But now they throw in nudity, which makes it seem like they have plans besides making a good volleyball game. And nudity doesn't fit in the game at all, so why bother?
There are some games where nudity might actually work out, like in the strip club in GTA3, or even have thong matches in wrestling games. Hell, Outlaw Golf has a stripper in it. But still, we don't need FMV footage of real strippers, and I don't play games for polygonal porn, I play them because I want to play a game. I mean, that's why we have the internet, for porn. And most people would rather whack it to NAtalie Portman, and all those lovely pornstars out there, than polygonal DOA3 girls.
"Mature" gamers really haven't matured. Ya think? That's because the "Mature gamer" crowd is mainly 13-18, still high school kids. But it doesn't really sound like the DOA3 developers have matured too much either, not have the Mirra XXX guys.