I also want to add that the "it's just JS" thing is not somehow an argument of the shining nobility of asm.js. It's purely practical as what we believe is a viable approach to moving the web in the same direction that e.g. the PNaCl team has been trying to move it. I get so disheartened at these mud-flinging contests. Our companies want the same things for the web (and we <3 the PNaCl team and have friendly conversations with them!). We share the same goals. We just believe that asm.js is a more viable approach to getting the web there.