No, it isn't. Flash Video (the current favourite version, not the VP6-based version) is based on AVC or MPEG4 video using the h264 video codec and the AAC audio codec. While Quicktime can deal with MPEG4 perfectly and has hardware H264 decoding on Macs, Flash isn't based on a Quicktime standard. You really need to study the difference between Containers and Codecs. Yes, given a decent multiplexer, you can demux FLV and remux it as Quicktime using the two streams, but they're in no way the same standard.
You're saying a Pine tree is based on an Oak tree when the only thing they really have in common is that they're both trees.
This is something I may know a little about, in case you couldn't already tell.
So, Apple is a closed eco-system and ... Flash isn't?
How's Flash on the Android? Or the Blackberry? Or the Palm Pre?
Adobe Flash is as much single-vendor lock-in as iPhone OS, so you don't get to use that one, I'm afraid.
Done. $20.
2.5 million sales worldwide by one year after it's made available for sale.