Is there some reason why Ethminer is not included in AM? Or is it just not as good as Claymore for Ether?
Patrike can speak to the exact reasons, but Claymore is a popular miner for Ethash, and has a very good API for AM to get statistics from. You could always try to add Ethminer in as a custom user-defined miner and see if it performs as well as Claymore.