Because she is not as reclusive and because she does have fawns, no she is not as tough an adversary as a mature buck.

But with all that taken into account, I put the average "mature" doer above a 2.5 yo or younger buck.

And then there is the fact that all "mature doe" are not created equal. Some (probably the older ones within the "mature" category) are more wary and wood smart than a 3.5 yo buck, IMO.