Why was it that suddenly, in a later chapter, the creator credits were done not by hand but rather with some pre-printed font? Just a test? I'm not sure what tools were available in 1985 at Marvel, but I bet it wasn't someone going to Print Shop and printing something out on a laser printer. It looks better than that.
Marvel had a typesetting machine, on which they did all the letter columns (and the text for MARVEL AGE).
I'd guess that the use of type was either a creative choice, or a way to stop having to correct misspellings of "Mazzucchelli."