A comparison of client-side web application frameworks

You are right that that is a big difference, but I wasn't trying to compare these technologies based on their runtimes - I was attempting to compare them based on the type of application they attempt to produce. I wanted to make this a very simplistic list without going down the slippery slope of explaining too much about each technology (as there is a LOT about each technology to explain). The way I see it, these are two different approaches to creating a desktop-like RIA, but the end goal is the same.

Fair point - I changed the name in the article (though can't edit it here). I wasn't really sure what to call the post, but I'd say it's a bit more than a list =).