So this is an interesting case for animation, but turn off the javascript and try real-world (manual) scrolling -- both pngs and svg perform about the same for me in Chrome (osx).
I'm not sure there's much of a takeaway here unless you're trying to animate the page scrolling of a full page of sprites (i.e., the example proves itself, but not much else).
I'm not sure there's much of a takeaway here unless you're trying to animate the page scrolling of a full page of sprites (i.e., the example proves itself, but not much else).