It will be sheer coincidence if that does happen.
Jerry Jones moved on to Prescott in October 2016 with a full personal commitment as his new franchise quarterback. It is just my opinion but I doubt Jones has privately held any comparisons between Prescott and Brady--although it would not surprise me if such a comparison has, in fact, escaped his lips into an awaiting microphone.
He talks SO much! Now, I would totally believe he has privately compared Prescott to Aikman and even to Romo, albeit probably to a slightly lesser degree.
For these personal conclusions, I would add also that Jones has long since passed Step 1. Way past. In my opinion, step 1 was deciding and committing to Prescott as his guy. Jones is working on Step 2 right now, which is securing Prescott's services long-term--a decision I fully believe Jones made and planned for by the end of October 2016.