That is an unfair comparison. IIS is based off an old code base so most of the bugs have been found and removed; Apache 2.0 is brand new and people are still finding them. Try  comparing it to 1.3.xx, that would be a lot more fair.

I would also like to point out that SOME of the above are third party modules (e.g. mod_php) and have nothing to do with the server.