Depends on what you call down field. Ronnie is actually decent throwing the ball a short distance. He throws a nice spiral that's easily catchable and honestly you don't really have to be that accurate since you're probably going to be throwing to a TE on a crossing pattern covered by a LB or something. It's a fairly easy throw. Granted that White would supposedly be able to make the tougher throws, but are you really ready to run a spread offense or are you just looking to run the wildcat? If you are considering the spread offense, then yes Pat White is a better option, but Ronnie is just fine running the wildcat, you don't need Pat White to do that. Considering the fact they took 2 WR's in the draft as well, perhaps they were really looking at the spread?
I think White was suppose to be able to run the wildcat the way Micheal Vick did. Throw 30 yards down the field or run for 8. Just like the what Denver hopes they have in Tebow.