Two main differences. First, most Ketone Salts are “racemic” which means it is only 50% bioavailable (only half of it can be used by the body as fuel).
Secondly, the Salts have a MASSIVE salt load, often buried under the lesser known salts like potassium, magnesium and calcium. Often exceeding 2-4 grams. Which may be fine while entering a keto diet for a week, but after which, good luck getting your rings off. Watch video explainer.