You'd be mistaken. Carbs work by vacuum. A ram air induction system negates vacuum and becomes pressurized. At what speed is the variable.
That vacuum is created by the venturi effect as a result of Bernoulli's principle. Even if there is a positive pressure in the mouth of the carb, you should still get vacuum at the nozzles to draw the fuel from the bowl.
A good ram air will get you quite a bit more than that, and I'm pretty sure whatever you were reading involved fuel injection. Which, of course, injects fuel under pressure, instead of being drawn from the bowl by vacuum.
What I was reading was a Hot Rod magazine in the mid 80's, talking about an automotive-type 4bbl being fed by a hood scoop. With that said, Kawasaki was building bikes with ram-pressurized airboxes before they switched to EFI, and I'm not aware that they had to pressurize fuel bowls.
I really think that a much bigger concern is going to be turbulent flow due to the design of the carbs and stacks, and maybe some resonance effects due to 1&2 and 3&4 intake tracts being paired up.
That, and how to deal with all the hot ladies throwing themselves at him as a result of this amazing ride.