How were you doing WP?
Did you pull big packs? -> if tank not equipped good enough -> takes more dmg -> requires more healing/tank running out of TP -> aggro/death
Did you do a normal run? -> even with mediocre gear hate should never be a problem unless DD/healer go nuts -> use regen and make sure there is no regen effect on the tank when pulling, spam Cure I instead of Cure II to reduce overhealing.

Tanks can do alot but they are no gods.
If DDs/healers with a 20lvl higher ilvl don't use their aggro reduce skills there is little a tank can do, because if they have to spam AoE hate akills they will run out of TP/MP very fast.