Mesh
Although the overall sounds are quite good, I also have to agree with you Larry on this being marginally better than A3 (of course this is just my initial impression going through all the presets). I'm also not quite sure what "Hyper-Realistic" really means........but I'm sure I can get some very good tones out of it with a bit of tweaking.......like I did with A3. I'll need to spend a little more time on it and see what all this "hype" is all about.... 
I noticed that in the "Miscellaneous Presets", many of them stated "the current preset uses models that are not installed". Does this mean:
1) I already have these models (in my A3 collection??) and just needs installation or
2) I have to purchase all of these a la carte, just so I can hear why A4 included them as a preset? (not going to be happy if this is the case.....
)
I got the same message on several of them...mind you I own EVERY Collection other then Mesa, and just about everything else...so it's amazing that I didn't "own" these items...
But, they are, indeed, ala carte items Mesh....
I went another step and added A4 to a mix of a a song I'm working on (very SLOWLY), and it
did make a difference. I replaced the 2 instances of Bias FX I had on the rhythm guitars with
A4 and selected one of the "Stock" Heavy Rhythm guitars (9000 I believe) from A4, and I did like it slightly better,
and, as you said, with with some tweaking, I'm sure this will be good...but I'm still not "wowed"