I think its definately "its own system" now. Some might say that it doesn't count because they're building on a framework that someone else created, but I say horsefeathers to that!
Many of the folks at Paizo worked at WoTC during 3E, and some worked for good ole TSR. It's their game as much as anyone else's, because they had a hand in what 3E was already.
There's really no reason for Pathfinder to be a "totally new system".
Completely new mechanics and paradigms that would make it incompatible with earlier iterations of the game would not give it any special legitamacy in my opinion.
Many of the folks at Paizo worked at WoTC during 3E, and some worked for good ole TSR. It's their game as much as anyone else's, because they had a hand in what 3E was already.
There's really no reason for Pathfinder to be a "totally new system".
Completely new mechanics and paradigms that would make it incompatible with earlier iterations of the game would not give it any special legitamacy in my opinion.