The little production softwood I've cut, always pleased with the way you can pull them around, definately different weight distribution. And in the HW, wintertime and summertime is a big difference due to crown weight changes.
Lets see, asymetical form, heavy tops, massive root flare, sometimes with an awful lot of tension, yes, its quite enjoyable to cut, takes a fair bit of evaluation to do it well. Many species with different specs, behaviors, and value for future timber, wildlife, etc. management. And yes, you can bore in and find 100 gal. of awful tannin enriched stink water, even on a tree thats just wind shook and not even hollow. And you'll let it all drain out, shove your saw in again and cut and another burst will flow out. Gets all over your legs/chaps. I read that about the smell of red oak, some of which old timers around parts call piss oak. To each his own....
I'll let you know that the butt cut felling procedure shown in tree junkies pics are, shall we say, the penultimate textbook fashion of felling a valuable large diameter HW. That said, I'd like to point out that we don't do this whittling all the time, although the open face, bore cuts, and wedges are typical, maybe cut a lsice off the root flare once shes on the ground. I'd also like to point out that thats a hell of a cherry he's pictured with. $.
Tree junkie, are you working with self loader trucks? A luxury rare at best further south.