We will see this week, I believe he can throw downfield and throw it well. The 11 of 493 is more about offensive scheme and it's one of the reasons why his numbers (and Minshews the year before and Falk the year before...) are kind of taken with a grain of salt.
A Patrick Mahomes arm is nice but it's not necessary to be successful in the NFL. If a Qb can zip a pass in there on a 12-15 yard out to the far side of the field, that is all the arm strength needed to succeed.
Personally, I think Gordon is the best passing QB in the draft this year... yes even better than Burrow, but guys like Burrow, Herbert, Love, etc have athleticism that Gordon does not have. Gordon can move around in the pocket to buy time but he's not going to scramble out of the pocket to create time like a Watson or Wilson or Mahomes or Dak or numerous other QBs.