I agree with Strikers Charged point. That online worked. Makes Brawl/NBA Jam all the more disappointing in that regard.
I bring up Brawl because, like NBA Jam, it relies on a quicker game that suffers if it lags. Also, it had terrible online.
I mean, the better question would be would it hurt the game/brand more if the online was terrible (like Brawl) or not present. I feel like for different people there would be a different answer. NinSage, you would obviously want online. I'd rather have no online than terrible online. I mean, that's based on the premise that the online in NBA Jam would be bad, which I think is a fair assumption. If it was good, it would have been included.