I feel this is an age old question. When SB and I were in Croatia we saw huge sail boats. We questioned whether the size of the mast mattered on a sail boat, and were quickly told yes by an old sailor sitting on a bench. Of course this is obvious given the bigger the mast, the bigger the sail, the bigger the sail, the more wind it can capture.
When you look at RVs/Camper trailers/5th wheels/toy haulers, I think we can all agree size does indeed matter. How many slides do you have, how much storage do you have, how big is your shower (that’s a game changer), what is your floor footprint (another game changer). But what about what you tow behind your trailer/Class A/B/C. We have seen motorcycles on the front of a truck. We have seen, couldn’t believe it but we did, a golf cart on the front of a truck. We have seen a lot of storage units that house cars/motorcycles/golf carts, even one long enough for a race car and all the tools/tires in it. But never have we seen a double decker storage unit behind a huge Class A. It houses a car/golf cart/bikes/motorcycle/canoes and a full mechanical section. We had to take a pic, because it is the talk of the resort.
Given all the chatter amongst the men, size does indeed matter. In fact it also includes a lot of head shaking and awe apparently.