Howard, in the same letter, has nothing but praise for the Mary Rose, referring to her as “the noblest ship of sail” and “The flower […] of all ships that ever sailed”. His constant praise for the Mary Rose may be due to his pride in his new command, but also partly due to Henry’s influence on the building of the ship. While all the other vessels in the fleet were the king’s ships, the Mary Rose was purpose built for the king, who may have had a hand in her design. Having recently been given the title of Lord Admiral by the king, perhaps Howard wanted to show his gratitude by complimenting the king’s ship-building abilities.
Sadly, once you start thinking that way, you have to wonder if the race was entirely fair. This was the first time an English military fleet had taken part in a race, so is it possible that the other captains, not wishing to offend their new commander, let him win?
Then again, the Mary Rose was a new ship, pride of the fleet, and so may have had an exceptionally well-trained crew, capable of handling the vessel in such a way that she was able to outmanoeuvre the rest of the fleet. Howard even refers to the techniques the crew used during the race in his letter, raising and lowering bonnets and adjusting the sails to catch side winds, and they appear to have been sufficient to allow the Mary Rose to perform well. If the rest of the fleet let the Mary Rose win, they didn’t make it easy.