Rome, because more of us have it I think. And it's a better game.
So an events list would probably read something like this:
Game Events
RTW 10,000 Singles
RTW 25,000 Singles
RTW 2 x 10,000 Doubles
BI 10,000 Singles
BI 25,000 Singles
M&B Warband Grand Melee (A warband team event with 4 or 5 man teams)
M&B Warband Singles
M&B Warband Cavalry Singles (joust!)
M&B Warband Ranged Singles
0AD Singles
0AD Doubles
Triposte (Play 0AD, Warband, and RTW for best of three. Only for the most committed gamer because, y'know, three matches in one).
Judged Contests (I'll find external judges)
3d Modelling Contest (for a collada format model 0AD style maybe?)
2d Art contest
Short story contest
Poetry contest
Dramatic Speaking contest
Music Contest
Both open and vanilla screenshot contests for 0AD, M&B Warband, and RTW.
Possibly with 500 or 40,000 events for Rome (to test either warband level or grand scale play). And a couple others perhaps, we'll see.