I don't know, WW, Oaks have so many varieties! the oaks of the west coat are very different than the oaks of the northeast..

my house had 2 white oaks in the back yard, (each was about 90 feet tall, they were huge!) and didn't have any low branches left (the first branch started about level with the roof line of the 2 story house) but california oaks are tend to, not grow as tall, but to be more massive in their branches.. both trees are beautiful, but very diffent looking..(my comparisions were made with trees that had trunks about the same size... not a scientific study, but just my impressions!)