Operas implementation of OpenGL,WebGL and HWA is different than other browsers but lets admit that opera fails to deliver it on v12.
Opera is falling behind the competition and web standards support nowadays also, “INNOVATION”(Tab Stacking is the recent example)
Heck, even maxthon is beating opera on web standards(HTML5test.com) and on some benchmarks like peacekeeper)
Opera needs to get back on track and be the fastest web browser king like 10.50 did.