Nitro Javascript engine? It could be an important difference between this test and FB's app. Safari gets it. It seems ambiguous still whether UIWebView users get it.
A more apples-to-apples comparison would be to put it in a iOS app running UIWebView and see if the performance is maintained. I'd certainly be interested in the results.
You can also do javascript with it. I can't speak to it personally but friends have used Script# (http://scriptsharp.com/) for client-side javascript with good results. Never heard of anyone attempting node.js with it... yet.
- Standard Mac keyboard shortcuts don't work (ie. ctrl-a & ctrl-e to move to beginning and end of lines)
- Can't drag a picture from the Finder into the OneNote