Ah neat! I had no idea.

I prefer Angular over Ember/Backbone/Knockout just because it makes more sense to me and I like the templating layer, but there weren't any YouTube-specific advantages or anything if that's what you mean.

Wow. This feels vastly faster and more responsive than the PS3 YouTube webapp, perhaps by an order of magnitude.

Perhaps part of the difference is that the PS3 is actually fairly underpowered by today's standards for general purpose computing (CPU intensive stuff, unless specifically made with their architecture in mind.)