Mehhhh. Everyone has their own preferences, expectations, and most of all
tonal norm on which one judges all other tone. It is this norm that sets the foundation in one's mind as to what sounds good, and with acoustic pup systems, this "norm" is all over the map, but largely dominated by decades of piezo-based systems. That said, enjoy what you prefer!
As for me, personally and fwiw, I am no fan of the ES2, but neither do I hate it. I think it lacks in many places, but is still far superior to many piezo systems out there. Yes, it needs significant EQ to sound more "acoustic-y" through a PA. By contrast, the ES 1.3 needs the least adjustment (precious little, IME), so this stands as my favorite. That said, I can --and
do-- EQ the ES2 to sound good live.
Better than a K&K,
better than piezo USTs, and
better than my old ovation (which was good, mind you). Every acoustic pickup system --
every one of them-- has its own traits, which includes tonal shortcomings.
I see the clear issue with
any proprietary system. That Taylor still supports the 1.3 is good for me and many others, but that day will end, and I hope mine will still be rockin. Then the ES2 will fall by the wayside. There is wisdom in buying a non-ES Taylor; this I understand. But I am here
now, and I want a pup system that
works great live now and
hopefully for the foreseeable future. This is why I love the ES1.3, and can
still use the ES2 to good effect. If I'm still around when Taylor no longer supports these systems, I'll figure it out then. But for now, I'd take the ES2 over many other systems currently available. The exception is likely the Baggs Anthem, but there I digress

Edward