SW "cheesecakes" are a bit like SW "quiches". You should not expect them to be anything like the real thing.
Actually the "cheesecakes" are very nice but, as you say, a bit "jellyish" if you were expecting the usual cheesecake texture.
(Personally I think that the "quiches" are just a bad joke, but people here seem to like them, so take no notice of me!!)