Boy that's a hard question. If it were me, and the sticker was on my fifth wheel, I would only mark the states that unit has stayed in. Perhaps on a forum if you used it as a signature pic or whatnot, I'd fill in everywhere you have stayed regardless of the unit because that's unique to you personally and the trailer sticker I believe should be unique to the trailer.
I know it's splitting hairs but I when I see one of those maps I assume those people and that unit have camped in those states. Otherwise where do you draw the line. If you have backpacked in many states, do you include those then on your RV?
Clear as mud? Good luck!
2013 F-350 SRW 6.7 Powerstroke
2015 Jayco HT 29.5BHDS