We've only been to the RFC at DTD, so I can't compare the two, but we've always enjoyed our meals there. I'm a vegetarian, and I think they have the best veggie burger on WDW property.
The biggest problem we've had at RFC is very long waits when we showed up without a reservation. When we had reservations, we were seated promptly. Reservations for the RFC at DTD aren't made through WDW Dining, they're made by calling the restaurant at 1-407-827-8500.