Empire Earth III is interesting mix of good ideas and bad ideas. Turn based colonization of provinces (borrowed from other games) and real time fight on smaller maps looks like good idea, but realization is very poor. I was trying to start in England location, only to find, that my neighbors are Kiowa. Kiowa? In the England?
Also, like good idea seemed funny responses of units, in other games are implemented too (i.e. Warcraft/Starcraft, Majesty). Problem is that units have no normal responses, only those "funny" ones ... and hearing the same line 15times in row is not funny anymore.
About game itself:
Graphics is nice, even if it seems little bit to inspired by Warcraft.
Units have similar effects, like in previous installments, but their pathfinding is horrible. Don't send fast and slow units, you are invoking defeat in details. Overall feeling from playing: Much worse than EE1 and EE2.