I don't think anybody has ever argued that Tommy has a stronger arm than Quincy. I also watched Quincy throw a 3 yard pass for a touchdown this week where Z had to adjust and make a really good catch cause the throw was terrible.
Changing qbs isn't going to all of sudden have our receivers beating defensive backs over the top or our offensive line playing worth a !@#$. The offense has been bad and Tommy isn't the reason.