Well, now that I've cooled off, I'll use my head a bit...
Your post does make sence. I mean, I remember about 6 months ago people predicted that we would be seeing +1ghz ppcs. And you are right, production is very slow and under.
And I wonder what a velocity engine would do on an AMD. Apple's web site says "The Velocity Engine can process data in 128-bit chuncks, instead of the smaller 32-bit or 64-bit chuncks used in traditional processors..." So in theory, I guess this concept would work on any chip, boosting performance when the application is aware of the VE.
However, I remember that when I purchased my beige G3 back in '98, apple was saying that it was twice as fast as pentiums. And G3's don't have a VE. And, in that last apple test (this morning), the peecee's mhz was twice the ppc's mhz. Yet they did not finished at the same time. The macintosh finished 80% quicker. So, assuming everything is linear here, if they had both had the same mhz, the mac would have finished about 4 times sooner than the pc. And if photoshop wasn't designed for a VE, maybe twice as fast as the pc.
I understand that Adobe is comming out with a pentium 4 optimized version of photoshop, too. I don't think that was used at the show.
I guess what I'm getting at is that if the p4 had a VE, then the ~800mhz macintosh would have finished at the same time as the 1.6ghz pc. But, things don't allways work out like that.
It would be interesting to somehow strap a VE onto a thunderbird or athlon.