Update...
Withing seems to make a significant difference!
I dropped four trees a little over two weeks ago, two red oak and two white oak. On one of each I limbed all the brush off and the remaining two were left as they fell. I also bucked one 36" round and one 18" round off the end of each trunk when they were dropped.
I went back yesterday to buck everything and take it home. The leaves were completely wilted. I was surprised to see the trees there were left intact and allowed to wither had noticeably less moisture inside. The two trees that had been limbed were very moist inside, as you would expect to see if a tree was dropped and bucked the same day. When I cut the 18" and 36" rounds (the ones I cut when the trees were felled), they looked just about as wet inside as the trees that were limbed. The withered trees by comparison did not have the typical excess moisture.
While this certainly wasn't a scientific experiment, I was surprised to see how much dryer the withered trees were compared to not only the trees that had been limbed, but also how much dryer there were than the rounds that had been left sitting. I do know that from this point on, I will be allowing trees to wither if at all possible. Sure they might dry faster if they are completely cut and split, but since I very seldom have the time to do this, felling the trees and letting them sit until I can get back to them for processing seems to make a difference.
BTW, the location I'm cutting at makes it impossible for me to get my dump trailer in and out of there, so I have to maximize my loads using only my truck. My neighbor said to me "wow, I'll bet you have almost a 1/2 cord there"... I know after moving load after load of green oak my back was telling me there just might be a little more than a 1/2 a cord in each of these stacked loads!