Nearly every one of those QBs had several big wins...
Delhomme/Louisiana Lafayette - Texas A&M
Alex Smith/Utah - California, Oregon, Texas A&M, at Arizona, North Carolina, Pittsburgh
David Carr/Fresno - California, at Colorado, Oregon State, at Wisconsin
David Garrard/ECU - West Virginia, Duke, at South Carolina, at Duke, Syracuse
Kevin Kolb/Houston - Mississippi State, at Mississippi State(lol)
Brett Favre/Southern Miss - Mississippi State(with the hat trick), Virginia Tech, Mississippi State, Florida State, at Alabama, at Auburn
Ben Roethlisberger/MiamiOh - at North Carolina, at Northwestern
All of the above quarterbacks definitely faced stiffer tests than Coleman will see at UTC, and most of them passed said tests a lot more often than their teams would without them.