Agreed. A large portion of "his" repos are forked from other people's. You can't tell what his level of contribution to any of them is at a glance. Also, he's got an absurd number of files for a project called "Hello World".
Perhaps a better alternative is to keep using GitHub to host your code, but then use your resume to highlight specific projects that you want to show to hiring managers. If they're really interested in you, they might look at some of your other stuff.
Actually you can tell, at a glance, how many commits are by the "owner" of a repo. They appear as dark blue in the timeline. If he has forked a project and made his own commits, his commits will show up as "owner" (e.g. for pydanny, he has made numerous commits to his fork of django-crispy-forms)
Perhaps a better alternative is to keep using GitHub to host your code, but then use your resume to highlight specific projects that you want to show to hiring managers. If they're really interested in you, they might look at some of your other stuff.