The processors may be faster for a minute, in synthetic tests, but intensive rendoring and/or other high cpu tasks in the real world may reveal how severe the throttling becomes due to the thermal constraints apple puts on it because of the 'thinness'.
Either way, if there's no way to upgrade the SSD (which all current mac laptops have), that would be the final deal killer for me anyway. In a so-called "pro" laptop, that's the one last critical user-upgradeable thing that I like to have the flexibility to do.
The first reason is the '2011' prices apple still charges for their SSD's. But also, I can guarantee you that these new models will max out at a 1tb ... and within a year or two we'll be seeing 2 and 4tB SSD's in all sorts of other 'pro' laptops - for reasonalbe prices. Being stuck for good a 1tb (even if I did pay Apple's absurd prices) would be unacceptable to me.
All in all, we can agree to disagree. That said, I still think you need to hit the gym.