I agree with Disney being better.
We just got back from our first time at Universal. I wanted to try something different, and my DS likes the Simpsons (I don't really, I think it's too adult) and the Nickelodeon characters. I guess I got sucked in with the ticket deal - and it was nice to see the other parks.
I found most of Universal to be more adult or older child oriented.
Disney, for us, has more for the whole family. We did have an enjoyable weekend, but next time we'll go to Disney. It was fine, but all in all, I think Disney does a better job with almost everything. The hotel was nice (PBH), I found it comparable to the Swan/Dolphin.
I also think the food at Disney is better - has more options. Also, the employees seemed (don't find this weird please) less professional. It just seemed a notch down from what we're used to at Disney as far as the whole ambiance. I thought it was tacky to constantly see the signs for the "Meal Deal" everywhere. We never ate in the parks.
I actually think my kids may have been better waiting until they were teens, but that is just my family.