Umm...this thread most likely won't lead anywhere because there're many decent players out there. But I guess it'll at least give some ideas who doesn't suck. Most people still suck ass though compared to japs...but of course that's a given because of the release date.
Of course it should be said that not all Japs are good either. I was in a group of really horrible Japs once that got me killed twice... so just because you can't understand what they're saying, don't assume they know what they're doing. =P
Of course been killed when partying with japs many times, or played with japs who just didn't know wtf they were doing (ie SMN hitting the enemy for 0 dmg and keeping summons out so they lose all mp, bad pullers, etc) But the majority of them know what they're doing, especially true for the higher lvl japs...thats how they got there in the first place.