Mike, please don't take this as a personal attack. Frankly, I'm impressed with your numbers from a box of Chinese parts. Also, I'm reluctant to post about this here because I really think this whole comparison thing is already taking up way too much space in this great thread.
BUT, here's what I keep seeing. When people compare the 572 to the 462, you say "but what about the WEIGHT go so far as to say the 572 performance should beat the 462 by the same margin it outweighs it by, 10.something%. Okay, fine. But then, when people compare a ported 70cc saw to your 660, you say, "but what about the PRICE?". It seems that you keep changing the metric by which you're comparing stuff. If you switched them around and said, the 462 should beat the 572 by the same margin by which it costs more, then it'd look a lot worse. Same with your 660 vs a ported 70cc; if you add weight into the equation, then your 660 hp numbers look a little different.
So, anyway, my point really is that there's a lot of factors to any of these comparisons. What makes one guy happy might not do so for another guy. I guess I think that the numbers speak for themselves. A statement about why you (or anyone) likes or dislikes a saw is great. Constantly comparing them with other saws by varying metrics isn't really that useful.
Also, thanks for the Dyno work Joe, I've had a great time reading this thread!