Here are my top 10 PS2 'vs style' fighting games. As you can see I am a fan of the 2D style, but I have included what I consider to be the 3 best 3D fighting games.
- Capcom Vs SNK 2
- Soul Calibur 3
- Tekken 5
- Marvel Vs Capcom 2
- King of Fighters XI
- Streetfighter Alpha Anthology
- Tekken Tag Tournament
- King of Fighters 2003
- Hyper Streetfighter 2 Anniversary
- Guilty Gear X2 #Reload
Personally I don't like Virtua Fighter, but I thought I'd give it a mention as many people do like it.