check your .html files in to your repo and serve them from projectname.googlecode.com. You can even set your project homepage to redirect there automatically if you are clever.
both can host project homepages in a variety of ways. GC gives you a navigable and clean and usable project landing page by default, while github makes you work a bit harder. neither service prevents you from doing what you want, but if you care about your non-developer users, you'll find better conversions using google code. fact.
to the OPs point, there is no reason why you can't make your GC project page have more content for developers. it is a wiki. everybody loves wikis.
the OP of this thread is clearly trolling, though.
When a user thus opts for this functionality what then is the differential factor in comparing it to GitHub?