The difference in a fully cured ceramic coat and the spray-on ceramics (even can coat) are pretty significant, but the spray on coatings still seem to provide plenty of protection and last much longer than traditional spray on sealants.
My truck has a Cquartz 3.0 coating but her Lexus just has a spray on and it seems to do well as long as I re-spray every few weeks or so (she runs through an automated wash weekly despite my warnings) . I use Adam's ceramic spray for it.