To be honest - I'm not using either.
Mass battles are pre-scripted to fit within the story lines I have in play,
& anything done by the players is not enough (at the moment anyway)
to change the overall outcome.
Basically I give them control over some small scale tactical decisions,
and of course...individual combats within the general maul of battle.
Player input in terms of a big battle is described differently by me based
on their small contributions, but within the winning, or loosing, team
framework that is pre-scripted.
Don't know if this helps, but I hope so.
Cheers