First reaction - no, it shouldn't. But...
I have personally marked a lot of question as favorite, but I don't always reach out to vote them up, although all questions that I mark are favorite deserve a vote up from me, since I've found them noteworthy at least.
I miss on voting up by "automaticness" of actions and a habit to proceed fast while searching.
I am sure 99% of favorite marks are also naturally vote ups from the "marker". But this could be subjective. Please consider this idea.