Totally disagree, he had a much stronger arm than most think when he was in his prime. When he was throwing to Devery and Meachum he threw many 40-50 yard passes on a rope....he clearly cannot do that now....
Compare 2016 to 2017. No noticeable decline in arm strength. It just appeared that Brees wasn't on the same table with Ginn as he was with Cooks.
The only way things would have been different is if Brees had a Peyton Manning super decline moment, and that didn't happen.