Judging by the examples, the script fonts appear to have been designed to have realistic characteristics such as uppercase letters and a variety of heights in lowercase letters. But what catches the eye is that none of the characters have descenders (the part of the letter that descends below the baseline of the text, like the bottom of a lowercase "j"). This would make it appear that there's more white space between the lines than required, and detracts from the otherwise realistic shape of the text.