I didn't nearly have the load time length that was shown in the Quick Look, and according to various sources, it seems that some machines have issues, and some don't. I don't think I had to wait any more than 8-10 seconds.

I have one of the older Xbox's and didn't experience load times anywhere near the length of those in the quicklook. Even the first one only took about 30 seconds maybe.

I never have problems with load times either, I think they might have had the game installed on the USB drive in the quick look which would explain that crazy long load time. But every level for me loads in about 10 seconds.

It takes about 20 seconds (just guessing) when I'm playing solo and something like 30 seconds when playing online co-op.  It really takes a long time but there isn't any loading during a level so it's kind of nice to get the initial wait out of the way.

Takes about 8 seconds for me, up to stage 3 and load time stays the same both single player and co-op.