Commit count is a very unreliable stat (as people have different (D)VCS usage patterns), and quite often newcomers or non-regular contributors just send patches to core developers, who then apply them to trunk.

I would also join the request of those who would like to see a karma multiplier based on just how Maemo a project is, say along the lines of 'straight port', 'localized Maemo application' (for something properly hildonized, etc), 'designed for Maemo' (for something written exclusively or primarily for Maemo).