I hav a capped rhino and sav helps a lot, rhinos are always better tanks than bears because:
1 we have a heal that gives us way more health and regen then the bear
2 we have charge/redemption which fully heals us at every level in pve as long as we have the best gear
3 we do not hold aggro long so we do not die
4 we can revive the unlucky people who got the aggro and our revive can be spammed unlike mages'
5 we can have 3 defence buffs vs 1 on the bear, we have more armor
6 we buff our teammates unlike mages