Washington ranks up there with the greatest statesmen of history... but not the greatest generals. His accomplishments in holding the army and the new nation together were truly remarkable, but his military exploits were not the stuff of Alexander, Hannibal or Napoleon (my top 3).
I think he should be given credit for that as a military leader. His greatest accomplishment may have been that he and most of his troops lived to fight another day under some very trying circumstances.