I'd say they're HD because
1) My TV displays what resolution its displaying. My set says the Panther's games are 1080i.
2) DD 5.1 sound
3) Fills my 61x9 tv without stretching.
4) I can count the blades of grass on the field rather than looking at a vague patch of green under the player's feet
5) I can tell when they switch from a SD camera feed to HD camera feed on the same broadcast
Of course, I'm uneducated as well
I think TitanTV is just often not up to date on their listings of all the games. Just think of it as another example of no respect for the panthers. I'm following the 'if it looks like a duck, quacks like a duck, acts like a duck' logic method