More than the pear-head 6472, yes, but certainly nothing disproportionate to sales numbers.
As I recall, the returns on the smaller #2775 (3/8" drive) were more, but then that's probably because we sold more.
If the rep (Wheaton) couldn't put a kit into them and get them fixed up, we'd just write them up and get a credit on them.
I think I mentioned this before: Wheaton would show up maybe once a year and we'd go upstairs and write up the warranty stuff. The box was about the size of the toaster, and over the course of a year, supplying up to 9 in-house retail outlets and selling onesie-twosies to outside accounts, we'd maybe have 20-25 pieces in the box, and the lion's share of that was stuff like snapped EZ-outs, stripped wheel pullers that had been hit with impacts, 1/2" drive deep-wells that were blown apart with impacts - stuff like that. Not too many really legit "failures".
I think there's a pervasive misconception about the line (as well as many others) held by people who really don't have much hands-on experience with many different brands other than what their own brand loyalty keeps them using, who run with the proverbial "a guy I knew told me" stories that for reasons I don't clearly understand seem to self-perpetuate.
I don't know why you'd get negative reviews on that one- it's a nice unit. There was a 3275 just posted in the "show us your new tools" thread earlier:
http://www.garagejournal.com/forum/showthread.php?p=5538904#post5538904
I can only assume Mr. Roze must like it, or he probably wouldn't have posted a pic of it.