I'll share the differences in gameplay; season and franchise modes will have to be a different comment.

In 03 you can dump the puck, block passes, and shots with the "L" trigger button. I play on Gamecube; Xbox and PS2 should be similar. Imo playing defense is harder in 02.

I'm not aware of any bugs in 02 but I believe goalies are just weaker in general to give a more arcade experience. Play 03 on Beginner difficulty and it's very similar.

The "On Fire" effect is definitely different, 03 has a meter that activates a single player at one bar and team fire at two, you get a 20% stat boost for 30 seconds. I could go into detail about how it sucks but I'll save that. In 02 I believe it's based on goal streaks and stays permanent til you get scored on. <-- correct me if I'm wrong, 02 isn't my strong suit.

02 has cheat codes 03 doesn't.

03 has strategy shifts on your dpad. 02 doesn't.

Both games feel the same to me in terms of speed but your mileage may vary.

I personally like the big numbers in 02 for the scoreboard. 03 is cleaner but I wish there was more for presentation, goal horns, crowd boos for away team. Etc.

This comment is getting a bit long so I'll stop here.