eea is a transformation pack, that you can create your own servers with, with the same ease of use as starting a normal esf game, (lan games included, and bot compatible) it wont le you join normal esf serers with it installed though, but it comes with a small program to activate/deactivate eea in 2 clicks,
sure its not as flashy as evm, but like me not everyone likes being seen all the way across the map, thier effects do look good in pictures but they arent really that practical for playing the game,
if you do like evm i hope you have a very good internet connection, or you live right nextdoor to the evm server in question, cuz you wont be making your own games for awhile,
there are reasons they are different,