Tyrod is absolutely one of them, but an All-Pro caliber guard, a competent OC, a decent TE weapon, Shady, Karlos, even Gillislee would've improved KO's scoring as well.
Would Sammy be invisible for the first half of the season or would KO deliver him the ball? Would Woods have his worst career year or would Orton spread the ball around?
We may not have had the #1 rushing team in the NFL with Orton. But our passing attack would've been much improved. Keep in mind, we were right around average in terms of passing #'s in 2014 when our running game was one of the worst in the NFL, and our O-line was garbage.
I'd say I lean towards Orton being better in 2015, but I'm not going die on that hill. Tyrod has a chance to improve and Orton was who he was.