Well, that way the "color palette " is extended for a longer time....maybe that's one of the reasons
. And, there are probably other considerations that we don't see, as well......after all, if "very similar to another" is a reason to not introduce.....there wouldn't be nearly as many registered as there are. Maybe the "more ruffles", maybe the "better scent"....if those attributes are what they were working for ? And, it might be as simple as "both of these are nice, and since I can't decide, maybe we'll intro BOTH, and let the public decide"
!