Depends on the fight. If I'm spamming shield block, I'm not spamming heroic strike; and it's around 450-700 tps. In a fight where DPS is letting loose and all heals are on me, I reduce avoidance gear (and increase stamina) and spam heroic strike/shield slam/devastate/revenge and numbers are more like 700-1000. If I get lucky crits I can spike 1200 and sustain it for a little while.