I think years ago that one half of the titles (and half if slightly misleading as there are a "set" of 33 and one of 44) were considered harder to get than the other half. However, I believe that it is now largely considered that neither half is really harder than the other. It seems that a box will either have exclusively the 33 titles or the 44 titles.
Yep, this is as I remember. It took two different boxes to complete a set, one with 33 and another with 44 titles. As I remember, there was not a way to tell the differences between boxes until breaking packs open. When boxes first started becoming available (back in my old Prodigy days, he recalls as he places his walker to the side and drops his dentures into a glass), it was thought the 33 title box to be somewhat scarce, but a year later there were plenty available. At one point, one of the novelty mail order catalogs was even selling sets of these (wish I could remember which one).
Seems like I had at least 8 sets back then and was part of the group effort looking for the cut variations. There was much debate on several other variations besides the "sanctioned 5" but the group dismissed several other candidates as appearing to be individual one-off cut variations rather than the die being different. This was simply based on comparisons of 60 or so copies of the same title stickers. Back then, before JPEGs and posting pictures on web sites became extremely easy, these comparison were done by get-togethers (yes, in person) of several people with a bunch of the cards, and mailing photographs to each other, etc. If no other examples of a suspected varation could be found and it was a very slight difference, it was discarded as a die variation but often kept in a collection as a one-off example. I can remember there being two such hotly debated titles, but can't remember which ones. Some, like MUD, FEARSTONE, and SCHNOZMOPOLITAN are obviously different die patterns as one variation of each has an angled corner and one a 90 degree corner. BANANACIN always seemed the weakest of the variations to my eyes. There were enough of each type found, however, to deem it a true variation. It would be interesting to see examples of other suspected variations posted here to eyeball. I will have to dig through some of my ancient notes to see if I can recall what the 2 or 3 debated titles were.