2v2 ladder template isn't the most strategic, nor the most well played. RoR 3v3 / 4v4 I think is more often played, but I'd agree that Europe 3v3 is the most strategic.
As a whole, I see more Rise of Rome games than Europe games. However, these games tend to be played by less skilled players than Europe games, and I see 1v1, 2v2, 3v3, and 4v4 all on Rise of Rome Full Distribution. For Europe it just tends to be 2v2 Szeuropa, and 3v3 Europe (ofc with the different variations).
I could very well be wrong, but I think I see more strong players play on the Europe map as opposed to RoR, for team games. I seem to normally see more games on RoR map though, in open games.