Dromaeo Chromium vs Minefield

I've been using the Chromium with V8 Javascript Engine and Firefox with Tracemonkey Javascript  engine nightly builds for a few weeks now. Performance varies, but overall they are faster then the official stable builds.

There is alot of buzz about these new engines on the Net. Here is my Dromaeo comparison, done with the following versions:

Chromium 0.3.155.0 (Developer Build 2750)
WebKit 525.19
V8 0.3.3
User Agent Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/525.19 (KHTML, like Gecko) Chrome/0.3.155.0 Safari/525.19

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1b1pre) Gecko/20080930093007 Minefield/3.1b1pre (.NET CLR 3.5.30729)