I don't think the artist meant for his/her art to be used in signatures. Note the rectangles on the right of his head, it's in both signatures but not the stock..
My only problem with 3 would be that it's not original in detail. Which violates the SOTW rules.
unless the individual that is responsible for this signature provides a .PSD I cannot allow it to be voted on.
Note, entree 3 is considered DQ'd till further notice.