A quick search of the Library of Congress (http://thomas.loc.gov/) shows that Hillary has sponsored or co-sponsored 150 bills in ~6 years. Barack has sponsored 113 in ~4.

This translates into:

Hillary Clinton---25 bills/yr

Barack Obama---28.25 bills/yr

It seems like they are equivalent in terms of being a "machine."
I encourage anyone who has time to look at this database and compare who has more fluff bills (over time) and post here.