Might be system dependent, though couldn't help but notice a non-trivial difference in the OpenGL rendering quality, between Firefox and Chrome. Chrome 32 bet

Might be system dependent, though couldn't help but notice a non-trivial difference in the OpenGL rendering quality, between Firefox and Chrome. Chrome 32 beta on OS X, produced an anti-aliased canvas, whereas Firefox 25 had the dreaded jaggies @ 1680x1050