Diet is the wrong way to look at it. Ketone Salts and Esters raise your blood ketone level, similar to say a cup of porridge and an energy gel increases your glucose levelsHow are ketones supposed to help exactly ? I've done the keto diet, lost a lot of weight but when it can to doing any sporting activity had as much energy and strength as a 90 year old, so I find it bizarre that it would be the secret sauce. to uber performance.
Easiest way to explain it is Ketone Salts were like a glucose tablet or bowl of porridge of the 60's, Ketone Esters are like a 2:1 maltodextrine energy gel. The Ester invention itself you could say is like the 2004 discovery where by mixing maltodextrin with fructose at 2:1 ratio, carbohydrate oxidation increases by 40% allowing the body to process 90grams instead of only 60grams of carbs per per hour. Esters similarly, just allow more Ketones into the body than is possible with the Salts.