Which is easier to drive into a tight site - A vs 5th?

which is easier to back into a parking space? a car/truck or a car/truck towing a trailer of any kind. obviously the unit without added baggage on the rear that can twist and turn in opposite directions. the answers based on experience, ability when observed, etc. are meaningless. just because some old geezer can't back up his 25 ft Class A and another person can whip a 35 ft TT into a tight spot doesn't really affect or determine that one is necessarily easier than the other.
bumpy