is a au metal head gasket in a ed engine as good as a au head and block

no

its still an ED engine.. not an AU engine.
u will gain a tiny little compression using an AU gasket thats about it.
and probably never have to do a gasket again

i mean is a au metal head gasket in a ed engine as good as a au head and block cooling wise because i know ea-el does head gaskets and would i have the same head gasket problem with the ed engine if i use a au metal gasket instead of a cardboard one

Yeah as far as cooling goes should be fine and not blow again.