i believe the only difference was the scent,
i have not tried the MX335 , but i have tried the grapefruit scent in other mixes and the scent faded fast for me.
it just didnt want to hang around which is fine by me because i wear alot of heavy scents (i have a scent addiction) and so nothing Androtics covers with has a chance to please or annoy me 
cashier might have been catty due to a sparkly signiture as well, i have gotten the catty thing before.
its few and far between, thank god.