Surely you hear a difference between, say, the guitar in Money For Nothing vs. the guitar in Sultans of Swing...? I think the pickups used for those two songs may have contributed at least a small amount to the diffference in sound...
Oh yes - don't get me wrong. Of course different pickups sound different. That's one of the reasons I have a guitar collection (at least, that's what I tell my wife)
And yes, the pickups certainly contributed to the sound of "Money For Nothing". But while it's hard to put proportions on it, I'd guess that 10-20% of the sound was due to the pickups, and 80-90% due to the fact it was MK playing it.
I think my point may have been missed somewhat. The point was that I interpreted the initial post in this part of the thread as asking what the pickups were in "MFN" so that @arislaf could change the JTV pickups in order to sound like that track. And my interpretation was obviously not quite what he was getting at, for which I apologized.
I've been guilty (many years ago, though) of thinking that I could sound like somebody else by changing guitars, amps, pickups, etc - but I've learned since then that most of anyone's sound is due to the player. Some are more recognizable than others.
Anyway - back to the main point of this whole thread - the puzzle as to why some people's upgrade to v2.0 of the firmware sounds really bad, while others' sounds great. It would appear that I'm not the only one with the problem, going on some of the posts earlier in the thread, but my support ticket didn't manage to come up with a solution. So I'm happy to stay on v1.9 and wait for v2.1 before trying again.