B C Z
Obviously, the higher your military strength the better...
Highly dependant upon the knowledge available:
What's in my hand?
What have I tossed?
What's on the boards of myself and other players
How far into the game is it?
As none of those facets are mentioned in the poll, you can really only base the answers on averages and assumptions.
I note that over half haven't answered the last three questions, and I think that's why.