"Inferior" is a strong word, when Hepburn, Walscheid and Mezgec is a potential world class sprint train.
That said, the Giro sprint field was also stronger. Kooij, Merlier and Milan are all not here...
The point is Jayco could not get their sprinter to the final enough times, when they had better chances of winning the sprint. You have to remember that for the Giro, Mezgec was a late call up, so was unprepared, took a week to get going and had not ridden with Ewan for six years, but somehow got him to more sprint finishes.
Ewan is an interesting case. Did not ride after TA, before the Giro, except for a one day race in Germany, and has not ridden since. Strange indeed!