At least you were able to complete it. I've beeing doign warzones for 3 hours, finally at the end i got one win, and it does not credit me for it....

I never ever managed to RE anything, that had higher lvl requirement then my lvl. When i hit the same lvl as the armoring, it was a breeze to RE. I do not know, if it works like this, or it's just my luck.

You're right. There are two rolls. Just the opposite way. The first roll determines Hit vs avoidance. The second roll determines crit vs shield vs normal hit. As far as i know, very high crit and shield will move the normal hit off the table. Point 1: you can't shield a crit. Point 2: Since you can't shield a crit only normal hits, effective mitigation numbers are goind way down, if you're fighting someone with very high crit (be it pvp or pve). Dont beleive me, google it up. Source was a dev, this was said in the beta forums, thats wiped now.