I disagree. I doubt you read any alphabet letter by letter. You read words or you don't read fluently. So the reality is: alphabets aren't inherently better, and I think the continued existence of Chinese as a viable writing system shows this to be the case.

The one advantage alphabets have is they have a more gentle ramp up, but I don't think they are inherently better. In fact your example of Roman vs Arabic numerals is a preference for logogram over atomistic writing system.