Those stickers are so wrong it is a big joke. A manufacture can only guess at what it might be as they don't have scales. When you start allowing chanes to the orignal floor plan, are changing the weights. Like you add a slideout, maybe two or three of them, maybe you delete or add a cabinet, you change the weights. Do you really think the manufacture refigures what each option adds or subtracts?
On top of that, the owner then comes along and makes modifcations, like replacing a barrel chair with a captains chair, adding or changing cabinets. Then the wife comes along and moves the pots and pans from the overhead cabinets on the left side to her new kitchen draws on the right side. The weights have changed again.
Two things that some owner make a mistake about are the weight distribution when adding water and supples and the height of each side of the motorhome from the ground. They hear that they should weigh the RV when it is ready for a trip. This number can be close but will change during their trip. They fill the freash water tank, which can put a lot of pounds on one side, then they take a couple of showers, moving a lot of that weight from one side into the gray tank on the other side. Now your weight are changed again. Having the fresh water tank full and measuring the ride heigh then moving the water around to the other side will also change the ride heigh.
I have not heard of any chassis problems due to weight since the 1990's when Toyota was making the mini pickup for conversion to micro-mini motorhomes. The manufactures kept increasing the size of the box they put on the back trying to make them as roomy as a class C. Then the owner would put himself and his wife/girl friend in the front seat and add another couple with all the supplies in the back. Merrerly down the bumpy road they would go until the rear axle would bend or brake. They then wanted Toyota to repair their broken motorhome under warrenty. Toyota stopped making the mini pickup for RV conversion.
My point with all this is that knowing the weight and ride height can be some what usefull, but is to be taken with a grain of salt. After all just think about what happens when two of you sit in the front seats, move to the sofa or dinnitte, then go to bed in the rear. You have moved a lot of weight around, changing the weight distribution and ride height. Then there is that case of beer you brough along for the weekend. Did you move that weight.
Stop worrying and enjoy your RV.