It's only included in the last chart, with this explanation: "The Opera 12 alpha comes with hardware acceleration but since it's alpha I don't want to include i

It's only included in the last chart, with this explanation: "The Opera 12 alpha comes with hardware acceleration but since it's alpha I don't want to include its results yet - sometimes making software more reliable also means making it a little slower, and considering I used the stable branches for all the other browsers I also thought it would be unfair to include Opera 12 alpha (until the end where I throw it in for fun)."