They're arguing over penalties for prohibited gun owners who decide to carry?
Those prohibitions already exist in other statutes. To create more strict punishments for prohibited persons carrying vs. merely owning/possessing the same weapon ignores the fact that they are probably already carrying prior to the Constitutional Carry bill.
If carrying before did not warrant stiffer penalties, then why now? Why not increase penalties for the original crimes, and don't make carrying a firearm anything special regarding punishment? Keep penalties the same whether at home, in a car, or walking around with an illegal firearm.
A felony is a felony in this context. They've already lost the right to keep and bear arms. Why make "keep" less serious than "bear?" There's no deterrence factor involved.