TNT Punches are good in combos because they are safe on block if you don't do the follow-up, and they allow you to juggle with light slash kick after the uppercut finisher. They are also very useful as a breakshot against stuff that is easy to breakshot, like a blocked Shooting Star. Lots of damage.
Also, I'd put "Most normals are terrible." in the cons section, and "Great standing strong attack" in the pros section.