There is more to this than the seats. A lot of options are not available on Big Horn. I considered going with fully optioned out Big Horn vs Laramie, then I found out the Laramie with the options I wanted is in the same price range as Limited (fully optioned out Laramie is more expensive than the Limited and they're still not in the same class still). So then the choices were, sacrifice some options and save money with Big Horn, or get everything I want and pay up for the Limited. Chose Limited as I don't buy trucks every couple years.
If I recall the options that aren't available on Big Horn are: push start button, remote start, remote tailgate release and dampened tailgate (or whatever it's called), leather seats and some other options that I can't remember now, not to mention just better quality interior materials. Nothing that I couldn't live without or replace with aftermarket