Hi Red Baron,
You say you have a problem with my statement that MIDI has nothing to do with Audio, but what I wrote is accurate. And you can bank on it.

MIDI messages are simply digital messages that are produced in response to each action you perform on a controller. When you play a note, a Note-On message is generated saying which note you played and how hard you played it. Included in that message is the MIDI channel. Once that Note Message is done (and it lasts approx 1 ms) the sound propagates on its own from the instrument itself until you release the key. Then, a Note-Off message is generated for that note. When that's received by the instrument, the sound will stop at a rate determined by the properties of the instrument itself (specifically its release time).
(Some of the above is paraphrased from my video tutorial on MIDI available at MacProVideo.com.)
My MIDI events need to occur at precise timing points relative to sample-accurate Audio.
But again, MIDI has nothing to do with audio or sample rates.
MIDI is not time-stamped when you generate it. And as it is, every time you play a note, there is going to be a minimum delay of one millisecond because that's the length of a MIDI Note-On message (and one that's not generated under "running status"). Besides, MIDI is a serial protocol, so even when you think you're playing simultaneous events (like a chord), the result is actually an extremely fast arpeggio of MIDI messages for each note.
And because it's a serial and asychronous protocol, it's impossible not to have jitter in MIDI messages
from the source (your controller).
Thus...
I think I should be given the option to relate/lock/quantize MIDI events to the sample/word clock coming from my ADAT master clock.
Need more coffee to address that one.
The following article has some interesting points regarding Logic's "live" MIDI input buffer. Apparently, Logic always has a MIDI frame-offset of 0, suggesting the MIDI input itself is badly buffered (jittery):
MIDI jitter might be ruining your live performance
I'll have a look and get back to you on that too.