Might be worth noting that a "hacked" version of that emulator was released, allowing any game to be played via BC (or at least, attempted to run) so long as you had a JTAG 360. The biggest surprise for me was finding that Rallisport Challenge 2 actually ran perfectly on it.By their own admission in interviews back in the day, the 360 OXbox emulator wasn't very well software engineered (they basically put it together by the seat of their pants until Halo 2 started running), was extremely fragile, and was damn near custom for every single game, and still had bugs, and also wasn't set up to interact with the 360 OS so it booted you completely off Live when you loaded into it.
I was heartbroken when the original Outrun 2 ran like shit on 360. All I wanted was for the slowdown to be cleared up, now my only hope is that it eventually gets emulated on PC.I have another half dozen Xbox games in another storage bucket but this will do. Of my 30 odd games, none run un-compromised on a 360; it's a grab bag of slowdown, crashes, audio bugs and incompatibility.
I tried playing Outrun C2C recently and while it looked nice I was quickly reminded of the looooooooong "has this crashed?" load times.
BTW I actually found that Quantum Redshift did run perfectly for me, and the upscaling looked great. My memory could be failing me, but I recall thinking it could pass for an early 360 XBLA title.
While we're talking bugs with the 360's BC, let's not forget PGR2 with the completely black car select screen (I think?). You really have to wonder what sort of level they were testing these games to before releasing them. Forza ran like arse as well, while everything ran it was at a far lower framerate than the OG Xbox.