"...just how much stronger (or not) is an RV compaired to a trailer?"

One of my brother's dimwitted girlfriends drove her cabover camper under a low bridge. The only word that described that mess was "shattered". I don't know how much better a trailer would be, but if it's low and loaded, maybe it could get along okay. Besides, if you lose your primary mode of transportation (motorhome in a major windstorm, for instance), you're stuck. Lose your trailer and you could probably still go on.

Sue