Basically they both can give you the same result when you take into account the actual 3D technology and capabilites of the consoles.
I still think people are stupid to consider jumping into this tech now. Its just a poor implementation and will cost WAY to much for a meager visual enhancement on a tiny amount of media.
This same idea is why I waited until this year to buy a HDTV.
I'll wait until 2012 or 2015 when 3D tv's either use a passive system with cheap glasses or have a full glassless option.