I am a loyal user of Internet Explorer, despite all the problems and shortcomings I've experienced with it. I am not surprised that the benchmark scores were so low, but I did notice at least one erroneous score in the benchmarks caused by a buggy addon. The author stated that he installed Java on the browser before benchmarking, and subsequently IE8 experienced slow tab loading when there were a large number of tabs open. This is a known and well-documented issue when the Java SSV Helper addon is enabled. I think it would be appropriate to retest IE8 with the addon disabled to produce a more "fair" score (I know that you are testing a default configuration, but the bug lies with Sun Microsystems, not Microsoft). I have no idea whether disabling the addon would affect any of the other scores, but some were so ridiculously low that it may have been a cause for that, so if the tab load score improves with the addon disabled, re-running the benchmark suite may be appropriate. Then again, IE8 is also known for it's poor JavaScript performance...
I believe that by retesting with the addon disabled would produce a fairer and more informative article for readers of your site. Thanks for reading this, and hopefully you'll take it into consideration!