It seems like it, yeah, but the difference is very small. Everything else on the stream looked exactly like I was seeing it in the emulator, but I think the real hardware may take a slightly longer time between loading screens that caused my 'look ahead to where the ball is going to be next' collision code to wig out. Anyway, it's fixed now so no longer an issue but def something I'll be watching out for in future games I make! :)