Eh, RMXP can use face sets just as well, if not with more customization, with scripts. And if you don't know how to script, you can implement a pre-existing script with no knowledge of syntax that works just fine.
And I don't think the debate of which maker is "superior" can be said to "depend on the person using it", because we are looking at a scenario where the same person utilizes either makers.
I use XP, but I'd rather not get into the actual debate. However, one thing seems certain: there are more skilled people using 2k3 overall, mainly because it's been around for a long time, and the old schoolers are sticking it while all the new people are being poured into the XP pile.