I'm going to go out on a limb and say there's not a whole lot of difference. ;-)
I'm assuming you had the opportunity to see them somewhere.
If it was the Pirate Bay/Demonoid Xvid torrents I will say there are some serious differences in Revolutions since that was v1 and I think I was strung out on crack when I proofed it. Reloaded only had minor technical fixes between v1 and 2.
If you've seen the DVD release than that's the final version and I'm sticking with it.
If it didn't suit your taste there are other fine Matrix edits out there too including the first to the party 'DeZionized' (now on to version 2) and Spence's 'Matrix Squared'.