Yep, Tekken 6 online is ass. i suggest only playing people on your FL and only those who are close to you, and even then you'll still mess up nearly all your juggles because it's just that bad. I played my brother who only lives 20 minutes away from me, and i still screwed 85% of every juggle i did.
On a another note, i can definately see why Devil Jin is mid-tier. I'm usually stuck using these moves (excluding moves used in juggles) because everything else is just so damn usafe.
EWGF
HS
1,1,2
b+4
d/b+2
ff+2
bf+2,1,2
d/f+1,2
d/b+4
u+4~FLY
ss+2
Don't get me wrong, Devil Jin is still fun as hell to play, but he just seems nerfed very badly from DR. WDC and wall okizemes seems to be the only real mind games i can play with him. Other than that, I'm just poking with HS, d/b+2, bf+2,1,2, d/b+4, and BDC to space out and punish any whiffs with EWGF.