Comparing RV's Question

As Bumpy said, the length and width affects where you can fit with your RV, and that applies to all RV's of all sizes, whether motorized or not. As for getting stuck on soft ground, that also applies to both, since tow vehicles can also get stuck. Lighter vehicles are just easier to get unstuck. Getting stuck in an organized public or private campground rarely occurs, although unusual whether with excessive rain can certainly cause problems where it's not normally an issue. Remote unmaintained boondocking locations can be more of a problem in that regard, but using common sense when parking any vehicle should mitigate that to a large extent.