Chalk Off and Quick Clean are NOT the same product, this has been established over a year ago when BCn started marketing Chalk Off in an extremely misleading fashion. As far as I know they are still doing this and there has been no legal conclusion to this as yet. Chalk Off apparently has chemical safety warnings on it that Quick Clean does not, so they cannot be the same formula. If they are not the same so they cannot both be Blue Coral upholstery cleaner. Whether they can be "basically" Blue Coral with some minor modifications I have no idea.
If you feel the need to try something totally unknown on your table for the sake of saving about $7 (either by buying the slightly cheaper Chalk Off or the Blue Coral) you are a braver man than I, given that wrecking it will cost you several hunderd in recovering costs. As far as I know no one here has tried Chalk Off, but many have used and like Quick Clean, including myself. So if you want to order something today and want to know it works as advertized go with Quick Clean.
If you want to hear all about it Quick Clean and you want to know ASAP I suggest
you contact David Hodges directly, he has been very happy to detail everything in the past.