Thunder Monkey
Banned
Yes, but almost every game would have been "better". That didn't stop them from being great games even if in retrospect their underlying technology could be better now.Would it have been better with more power available?
Yup.
Hardware is one piece of the equation. Mass Effect would have been a great game on the Xbox. Just uglier. It's a great game now, and more powerful hardware will be launching this year and likely next.
Simple games like Angry Birds could be "better" with a huge budget and visual enhancements. Some games don't need more than they have to be stunners, fun, or industry standards.