What I hate about MP figures for TBS games is that the only source (typically) they're able to poll in terms of data is ONLINE. Admittedly, this is anecdotal, but I don't know anyone who plays TBS games online with random people. I do, however, know piles of people who play TBS games cooperatively, generally over a LAN or LAN simulator. Those people are not being tracked.
That being said, it has to be understood that the MP community of any game, especially TBS, is a small minority. For me, though, I won't purchase a game that doesn't have multiplayer. I'm a social gamer (in the literal sense, not referring to the new "social game" trend)... this is a hobby I share with my friends.
I don't regret purchasing E:WoM because I want to support Stardock, but none of my friends have picked it up because the MP is just so damn bad, and there's no way I can recommend it to them.