"unless Flash dies off completely, Canvas ads will always suck more CPU cycles than Flash ads." Who says they'll progress at the same rate? That's ridiculous.

"unless Flash dies off completely, Canvas ads will always suck more CPU cycles than Flash ads." Who says they'll progress at the same rate? That's ridiculous. Flash is at least 10 years old and has been in extremely heavy use, so it's likely plateaued in terms of performance on most platforms. Canvas (and the rendering engines for it) are very new by comparison.