After the VT game I questioned and even mentioned here, what if we had put Cardal Jones in after the first half? Jones is bigger and harder to take down. He also seems to have no fear of a pass rush.
You speculate that JT would have made the victories more lopsided, it could just have easily gone the other way. Take the Sugar Bowl, several times we were in our own end zone, we almost took a Safety, but Cardale was strong enough to get out. JT couldn't have muscled out of those, perhaps he would have scrambled and picked up a few more yards, perhaps we take the Safety. There is no way to tell.
In the summer 2014, Urban said the offense just ran more smoothly with JT, didn't really go into any other detail. JT won't be full strength in Spring camp, Cardale is going to be taking the first team reps. This will give him time to learn and practice the other plays, specifically the options. If he improves his option reads, then I think he has the inside track to start.