I never find myself running out of TP in dungeons spamming OP constantly with rare exceptions like multi-wave sections like the goblins+bombs in that Yojimbo dungeon where adds spawn after you kill the pulled set extending the encounter. But I will often (towards the end of a pull when there isn't much left) drop defiance and pop equal for TP. There are really only 2 pulls between bosses in most cases and the equal for TP between pulls works well for that. Non-issue if someone gives you TP though. Maybe I just don't often get very aggressive healers. I cant remember the last time a healer out DPSed me in a dungeon, but I usually just solo cue instead of cueing with my FC healers or whatever.

I didn't mean to dispute that war CANT restore more HP than drk for AOEs in tank stance. Its more of a question of if that defensive style of play is optimal in the DPS>all world, but that seems to mostly depend on how much damage your healer does. If pugging, I don't really have high expectations lol.