That's correct: the dimension in the name of these ranges is vertical - they are the same width. All of the extra height of the 22 inch model is usable oven space, and without it the 17 inch model is only suited to relatively flat food items.
Few people would roast a a turkey in their RV oven, but if you want to do that (or even a chicken) in the oven of the 17 inch model, I suggest flattening it... try spatchcocking
I can't think of any issues other than the space and weight increase, unless the 22 inch is too tall to clear the wheel well housing in the cabinet. Every current Escape model places the stove or range over the wheels, except the 17' which has the furnace under the stove and does not offer the range.
At least one Escape owners was able to have a Dickinson Marine range
custom-installed instead of the standard range, and that (either model of the two offered by Dickinson) is the same height as the 22" Suburban range, so the 22" should be possible.