I took this 32" DBH Pin Oak in my lawn down this past Winter. This tree was victim of Oak Wilt. 90% of what I cut is Northern Red Oak. This big Pin Oak was indeed (and obviously massively) twigged out. Took me almost as long to clean up the brush as it did to process all the usable firewood. Waited till we had a pretty good snow cover to protect my lawn. And, although I have great faith in felling skills, the wrong direction would have clipped my house, so, I added a little mechanically advantaged come-along persuasion.
It definitely is a little tougher to split, at least by hand which is how I do all my splitting. I got 4½ cord out of this tree, using branches down to 3" diameter.