Like I said in a tweet this morning, I know those Googlers know way more about JS than I do, but if they think as per the leaked mail) that devs are choosing iOS over browsers because of JS, they have their heads in the sand.
Those choices are happening due to iOS as a platform not because devs are somehow so much more happier learning/using objective-C! The best thing that Google could do is to KEEP working hard on improving the browser platform like you guys are doing with B2G and they started to do with ChromeOS.
For example, I'd love to hear from the ChromeOS team exactly what in JS is blocking them delivering all the kinds of APIs that B2G is promising to deliver.
And on the server-side, some one should tell the hordes flocking to Nodejs that they are all wrong! As you pointed out, serverside everyone can choose to use whatever they want and given that choice, just look at everyone jumping on the Nodejs bandwagon. I'd love to see all those thousands of module that dev around the world have written in Go recently! (npmjs.org)