Summmary: Fight Night Round 2 is a fun game to play, and was good for its time. Not realistic to boxing due to the haymakers, but still a fun experience. It's like a more arcade like game instead of a simulation. Also, the music sucks. I like this game.
Graphics: 7/10. Surprisingly realistic for a game made in 2005 (Gamecube, Xbox, PS2 era). The fighters look very similar to their real life counterparts. When the fighter is hurt, you can see visually just how messed up they got hit.
Music: 2/10. It sounds like trash. I had to mute the entire game just to play it.
Sound Effects: 7/10. The sound effects like regular boxing games. Sounds decently good.
Gameplay: 5.5/10. This game is all about the haymakers. Every other punch is way too weak, and doesn't look usefull at all. You need to be doing haymakers at least 80% of the time.
Content/Replayability: 7/10. It has a career mode, hard hits mode (basically every round is a knockout), and multiplayer. This is all great for 2005.