Since the Expedition is built on the F150 platform, what allows the F150 to have a considerably higher payload and towing capacity? Is it the solid rear axle and leaf springs? This link - https://www.briarwoodford.com/research-f150-engines.html - has towing and payload tables on the left side of the page for the F150 and includes the capacities with the 3.5L Ecoboost. I'm just curious - I love my 23 and wouldn't trade it!