Have you ever "offroaded"
Have you ever "offroaded" with a turbo engine? They have NO low end torque, as in off idle. Then hits hard around 1500-2000. For precise crawling, they are a genuine pain. Constant managing of boost with the brakes and gas. Ditto for turbo diesels. Ram nixed the Cummins in the Power Wagon for a reason. It'll be interesting how Ford does with their next gen (ecoboost) Raptor, although in a high speed dessert truck, off idle crawl performance is less important than in a woods truck or crawler.