I'd love to see someone come up with actual facts around this Flash on Mac issue. There seems to be somewhat of a shortage of facts. Gruber has mostly hearsay (although he is very convincing with that).
We'd need to do real benchmarking for various sorts of flash content. What about poorly written ActionScript in the SWF? Does it matter when you are running multiple instances of the player, etc.
These ongoing political speculations are entertaining, but they are getting us nowhere.