Its all about restriction of air flow and the proper mixing of fuel. A properly tuned FI system and carb that flow the same amount of air will make about the same amount of power with the edge going to FI. Carbs have no power advantage, but their difficulty to tune and sensitivity to pressure and temperature are critical problems that have led to the obsolecence of carburators. A high pressure sprayer can also better atomize fuel than a carb, so FI is also better at mixing fuel and air than a carb is too.

A lot of what I read above is BS, for example that a carb will better atomize fuel or that it will have a greater temp drop. The joule-thompson effect is just a fancy way of saying that if you expand a gas by lowering its pressure you also lower its temperature. To do so in an induction system you need a restriction. A carb needs the restriction to meter fuel, but FI does not. That temp drop does nothing good for the motor since this low pressure air will adsorb more heat than air that experiences less of a pressure drop before it reaches the cylinder.

So the bottom line is that the above text is nothing but a bunch of selective fancy talk trying to obscure the fact that carbs are inferior to FI from a guy who is trying to sell obsolete technology to auto enthusiasts.

For that reason I raise the flag for the above text as being both misleading and wrong on multiple points.