the physical pleasure depends more on the girls skill. fat girl blowjob MIGHT feel better cuz she knows shes useless for anything else so she practices hard. a blowjob from a hot babe is more FUN. with a hot babe you can grab her face, push her up and down, yank her hair, choke her, spurt all over her face. (all of which she absolutely loves, btw) you cant do that with a fat girl, at least its no fun if you do. cuz she’s just a featureless blob of flesh.