Time difference between form 2 and form 3b is bad

I have a form 2 printer and just purchased a 3b and the time difference for the same print is ridiculous! I was under the impression that the form 3b was supposed to print faster, but that is not the case at all! The time difference is 7 hrs 30 min for form 2 and jumps to 11 hrs 8 min for the 3b! everything is exactly the same except print time! This is reduculous!