What can I say... the name SPIDER-MAN = QUALITY at least for now, the movie and the ride have set new heights on many different levels. Makes you think, how much would people brag about IOA if Spider-man wasn't there. I think it would still stand as a very good park, but the fact that Spider-man is there makes it the best competetion Disney has ever felt (even if it was just a nudge). Anyway, I think you really can't compare the rides based on what they are, but as far as crowd pleasers, I think SPACE will do so. But, I have never felt as Amazed as I was the first time I rode Spider-man, it has raised a new bar that will be hard to meet. For those who have never rode anything at that level maybe they would ride SPACE and feel that experience as well, but for those of us that have experienced it with Spider-man, it will now be that much harder to impress us again. This hurts Universal in that sense as well... how can they top Spider-man?
As far as innovation versus impressiveness. I vote innovation every time. That has always been what makes Disney stand out from other parks, it has been lacking in recent years, but with Test Track and SPACE I think we are seeing new techniques emerge once again from the mouse. But you have to give credit to Universal, to take the best of several rides and make the best combined ride is their trump card to keep riding. All I can say is good luck to them.
Just a side note, I have used the screen name of Spider-man for about seven years now, so I didn't jump on the band wagon because of the movie or the ride, I was a fan from childhood, I'm just happy to see the franchise getting it's due after all these years.