From experience...
CA tend to be slightly shorter blades, by like 1.5cm. The width tends to be around the 104-105mm mark as opposed to the full 108mm. A lot of companies have been doing this recently, personally, as long as it doesn't drop below 105mm, I'm generally okay. Found Newbery would sometimes taper down from 106mm at the toe to 102mm at the shoulders. I think it's entirely dependent on what they're trying to achieve, probably just a lighter batch.
Companies which tend to stick with the 108mm limit are GM, GN, Kook and Slaz. SS are generally around the 106mm mark. It doesn't make too much of a difference, but it's surprising how your eyes can spot a 2-3% difference in width at times!