Hate to say it but scofield and herring are both capable of playing a lot of stuff that trey can't play. Never could as far as I can tell.
Then again trey does a lot of creative stuff they they don't

I'm a Jimmy Herring fan (and there aren't a whole lot of us) but I cannot agree with this. Herring is an excellent technical player who rarely strays from the 'box'.

He doesn't have nearly the vision or ability to anticipate as Trey does, and few do. Trey has a skill at building mountains of musical beauty seemingly out of the dross of nothing, on the fly. Of all the guitarists I've heard over the years, only Jimmy Page and David Gilmour compare in that regard. Yet, he also has the virtuoso of Steve Vai and Joe Satriani. You can't compare Trey flying without a net on a live stage to well-polished studio renderings, either.

For what it's worth, Eric Clapton has gone on record as saying that he believes Trey is the best guitarist in the world. You may not be a Clapton fan, but that's pretty high praise from quite a reliable source.