Summary: Of the bunch, this is the only one I played, but I liked it a lot. Made my boxer and commenced to laying waste to the AI on my way to obtaining belts in multiple weight classes. I didn't play online or anything because I don't like you and I'd probably get my ass whooped anyway, so I can't comment on that portion of it. If you are into going through people's stuff they don't want Of the bunch, this is the only one I played, but I liked it a lot.
Summary: I love Fight Night, I have been religiously playing Fight Night since it was Knockout Kings in 1998 on the PSX. Well the game is good, don't get me wrong, it has improvements to Fight Night Round 2, but it also dropped the ball badly. First I didn't get this game to choose two fighters and go toe-to-toe, I bought this for the Career, and the Career was a thing of beauty in Round 2 or as close to as I had seen at that point.
Summary: Arrived quickly and in good condition. Excellent game, and was one of the few games that I played and beat all the way through on PS2. However, if you have an Xbox 360, get that version instead, the graphics are obviously better.