Well the world we live in is analogue, all sounds produced by real instruments are analogue, and sound modelling (Although virtual) generates sound in the analogue way. (Have you noticed with all the retro keyboards about, how many are trying to emulate analogue instruments?
Its like saying CD is better the Vinyl, it sounds great, but when you compare it to the real world, the vinyl recordings leave the CD way behind. (Again analogue wins out over digital)

B4II: I know a few people who have a genuine B3 (Some even have a collection) and all use B4II as well, and the comments have always been as close as it gets to the real thing. (Preferred over the latest Hammonds)

XK3: All the latest Hammonds use virtual tonewheels (They mimic the analogue sound production of the mechanical tonewheels) with all sounds modified the analogue way, (Just like the original) and as far as I am aware there are no samples used.
Interesting to note also is that they have unlimited polyphony, which can�t be done with samples as the cost would be prohibitive.

Pianoteq: If you had a listen to it 12 months ago, you would not recognise it now, as the transformation is massive, which is why I say give it a few years (And not that many) it will leave sample players for dead.
The future is most definitely back to analogue, just in a virtual environment. (However as you say, there is always the possibility of other technologies being developed)

Bill