It doesn’t differ, in many respects. Off the top of my head, one might say that a person isn’t suppressing his sexuality but is instead redirecting those energies.
Just as one represses gluttony, or greed, avarice, sloth, and the others. We tend to put a special emphasis on lust/sexuality for some reason, as if it’s worse than the others. Which, now that I think of it, it might not be. Masturbation, for example, will hurt you spiritually but not physically. Gluttony, on the other hand, is a sin that could also lead to diabetes, heart disease, stroke, cancer, and a host of other chronic diseases.
“Joe was a good family man, but he couldn’t resist that one last double bacon ranch cheeseburger. Now he’s dead, committed the sin of gluttony, and hadn’t been to Confession, so he’s on his way to eternal damnation and his wife and kids are without him,” seems worse than “Joe couldn’t maintain a chaste lifestyle.”