9007199254740992 running in "random" mode with 0ms delay is still way faster in Chromium 32 than in Firefox 28. http://www.csie.ntu.edu.tw/~b01902112/9007199254740992/
http://www.raymondhill.net/voronoi/rhill-voronoi-demo1.html
The difference has narrowed though, FF used to be much, much slower than chromium.