Coming off their last-second victory over the Bengals, the Broncos would play their Week 2 home opener against the Cleveland Browns.  In the first quarter, Denver would trail early as Browns kicker Phil Dawson got a 22-yard field goal.  Afterwards, the Broncos took the lead as quarterback Kyle Orton completed a 2-yard touchdown pass to tight end Tony Scheffler.  Cleveland would creep close as Dawson made a 47-yard field goal, but Denver would answer as kicker Matt Prater got a 23-yard field goal in the second quarter and a 38-yard field goal in the third quarter.  In the fourth, the Broncos pulled away as fullback Peyton Hillis got a 2-yard touchdown run and running back Correll Buckhalter got a 45-yard touchdown run.. How many more yards was the longest touchdown run compared with the shortest?