I have a 840 ret pally and I cannot hit 110s at all for the most part. But if I do land it hurts em. Max usually 600k crits. So imo ret is not good for anything accept ipvp
I have 6 101s and the only one thats amazing at world pvp is my Assas rogue. With the mastery buff from broken shore I can envenom 110s for 3-3.9million it's a crap load of fun.
As for instanced pvp my bm hunter doesn't shine that much but my death knight does. Just melts classes with the aoe...
So I am a bit surprised at the ret.. I didn't start with execution sentence but then I tried it out and it crits 1.2-2mil depending on cds.. virtues blade also crits 1.5million ish on bosses because they are immune to stun. Now execution sentence has a 13 second cd but if haste procs its more...