Ryan had a remarkable year, but statistically Palmer didn't exactly rob him of the award.
...and if you look at the Cy Young race that year, Bert Blyleven, who got exactly 1 Voting point in the balloting, might have actually had the best claim for the award.
With modern day analytics and balloting, he very well might have won it over both Ryan and Palmer in '73.
Also, maybe the most surprising performance I noticed was John Hiller compiling a 7.9 WAR...as a Reliever.