I think there is a lot of confusion with what I was trying to say. I wasn't claiming MBPs are "bad"...just refuting the claim that similarly spec'd laptops are about the same price. And I still believe that is a reasonable point.
Regarding the drives, I found some links quoting those figures ...although synthetic benchmarks in the wild seem to give different results (~2.0 GBs read and 1.3 GBps write). I wonder what a synthetic benchmark with those two laptops would be like side to side. It may very well be the benchmark tool in both videos is artificially limiting drive performance...which would also be reflected on the Blade who knows.
(As an aside, even at 2.0 GBps read and 1.3 GBps write that is still very fast)