Values vary a little based on spec but none of them hold Agi or Crit as a top priority. Sta, Hit and Exp are your top three. Agi is at the bottom, crit is just above base AP.
Stat weight sheet in the first post. It's outdated but still relevant. Ar-P has recently received a boost and is much more desirable now, especially for Blood.
If you're looking at prime stats, you want Str. "Bonus stats", go with Hit and Exp until you're capped, then Ar-P. Crit will kind of come on it's own with other stats, along with AP.
According to Ghostcrawler, Ar-P has a soft cap but based on current raid testing, Ar-P can actually push a mob into negative armor.
As for Blood, it's still in testing but the early tests show Ar-P edges our Str around 6K AP.
EJ Find the thread based on your spec and do some reading.