There are way to many variables to say which is better. From my experience, the Class A is usually a little easier, in spite of disconnecting the toad if you have to back in. After all, unless you are hitting the road the next morning, you have to disconnect the tow truck of the 5r once you park.
The reason why I say the Class A is better in a tight situation is because of the swing needed for both the trailer and the tow truck. The tow truck may have to swing the opposite direction to get the trailer in the parking spot but this is minimized by the skill of the driver. Also a lot depends on the wheelbase of the Class A.
Personally I prefer the Class A in a tight situation.
