10% Stun Duration Meta Tanking
So.. I have a paladin on my server that has claimed Powerful Earthsiege Diamond to be the best tanking meta. He's saying that the half second stun duration reduction of a 5 second stun is going to mitigate more damage vs other metas. I can honestly say that single target tanking most other metas wont really show for a lot of damage being reduced. As for multimob tanking this meta doesn't seem to show for much vs any other meta.
He pulls up fights such as KT where you have your Ice block stuns, but I find it to be a very minimal effect and the overall damage reduction of the meta is rather pointless considering you'd be getting spammed heals.
He argues that being completely stunned brings mitigation to 0, but regardless that half second or less of being stunned is pretty useless.
How can I convince him that his meta is not benificial.