Spells: Aoe mez not being over written by higher level mez

[Brimacombe]

I spent months AOE mezzing trains my groups began trusting me to handle. The rotation was AOE mez followed by single target fixing each individual mob followed by debuffing every mob followed by the tank taunting before breaking mez and maybe a caster rooting them. This would have not been possible at all had single target mez not overwritten AOE mez.
This is, of course, assuming one enchanter is running the show. In the case of multiple enchanters, the lower level enchanter could not overwrite the higher's spells period because level of caster trumped other stacking considerations.

-Brimacombe