That 2016-17 season for Hayward was absolutely filthy. Scored 22ppg on fewer than 16 shots (!), for the slowest-paced offensive team in the league... along with 5.4 rbs and 3.5 ast.
With that said, I agree with the other posters when it comes to distinguishing between best individual season and best season, period. I don't think he'll ever score 22 ppg again, but he can be an excellent contributor to a championship team. The point is to win, after all.
It was a really good season, but it should be noted he was playing on a team where the next best isolation scorer was perhaps Joe Johnson.
The second and third leading scorers on that Utah team were George Hill and Rudy Gobert.
Well, it should also be noted that he was playing on a team that posted the dead-last slowest pace rating in the NBA that year. They played at a rate of just 91.6 possessions per game.
For comparison, the Celtics last year played at a rate of 99.6 per game -- which was right at the median for the league.
What that means is that for every minute on the floor, those Jazz players were playing about 8-9 percent fewer possessions than the average NBA player was this season. That means you need to scale up most counting stats up by that much.
Gordon averaged just 18.4 true scoring attempts in 34.5 minutes on that Utah team. If they played at the higher pace that Boston did this last year, that would map up to 19.9 scoring attempts per game at the same USG rate.
And despite being the 'number one option' on that team, his USG rate of 27.6% wasn't really all that high for a number one scoring option. The Jazz distributed shots around to a lot of players. On most teams the primary scoring option is closer to 30% or above.
If playing at a higher pace, he could very get the same number scoring attempts now with a lower USG rate. If the C's played at the same league-average rate as last year, Hayward could post a USG rate of just over 25% and end up with the same scoring attempts per minute as he did in his last year in Utah.
Some of that will depend on the way the team plays -- how many touches he gets. Some of it will depend on his own aggression level -- how many shots he takes per touch. The latter number was where he was most timid to start last year. He gradually increased that as the year progressed, but was not quite back to the same level as he was before. Hopefully he will be to start this season off.