My thoughts based on trips I've made:
-Iowa's tailgating is really fun if you get in with the right group in the right place. It's ******* awful if you're in the wrong place. Where ISU beats Iowa is in ease of access and convenience. The intensity and passion behind the tailgates is pretty similar. Iowa's an upper tier tailgating school, we're just a little better.
-KSU is better than KU, but KU actually has a really fun gameday atmosphere. No one really gives a **** and there isn't a big set of tailgates at the stadium, but there are fun little neighborhood bars in that part of Lawrence (it reminds me of West Ames and places like Thumbs and Mothers) that draw a big game day crowd. Go to Lawrence, get $5 tickets, and bar hop from Louise's West (great Bloodys), Rick's, The Jayhawk, and The Wheel and tell me you don't have a good time. KSU's set up is extremely similar to ours, but a little smaller and just a little less fun, IMO. I realize it's weird that I'd say KSU is better and spend all this time talking up KU.
-Never been to OU, but I really like OSU's tailgating. Kind of like ours, but not quite as open or extensive.
-The State of Texas is a coin flip between A&M and UT. A&M has a better set up, I'd say, as it's a lot like ours. UT has a decent set up, plus you have the option of hitting Austin places. The local Austin Cyclone club does a phenomenal job of hosting a tailgate, and that may cloud my opinion too.
-I just realized that they ranked Marshall as the best tailgate in West Virginia. Someone is trying to piss off WVU fans. WVU arguably has a better tailgate scene than we do. Arguably.