Ogre Shaman V Troll Shaman in velious

[Ames who?]

Which race is better suited for soloing in velious? Since you will be tanking the mobs I can see why frontal stun immunity is great asset but how does it stack up to the 600 hp that trolls regen while standing over a five minute fight vs an ogre reneging 200 hp over that same time? The mobs would be slowed with torpor running and all you need is to be able to out regen the mobs dps which should be easily accomplished with those two spells. You could also time your spells in between bashes but one misstep might get you killed. What do yall think?

Iksar is out of the question because i want slam for pvp.