The pi can run up to late eighties games with some overclock and optimisation. It's not going to run Streetfighter.
The Raspberry Pi already runs Neogeo games
I guess CPS3 emulation is out of reach for any upcoming MAME port, but I'm confident we will have it as soon as any brave coder dig deep into final burn alpha
code (caanoo source code
Good thing for "raspberrians" retrogaming lovers is that half job have already been done by wiz/caanoo/pandora emulation coders. There're plenty of opensource homebrew coded for "pretty similar" hardware, so it won't be necessary to start from scratch in most cases. Having said that, I'm just a regular user but I wanted to point out that CPS3 could be possible
, not by MAME but by bringing FBA to our Raspi.