Pascal is the type of driver who will take 100% of any opportunity for a good result. He's been in Q2 four times this season, not just "scrape through then wind up 16th" either, he was 12th on the grid in Austria and 14th in Italy. Not to mention Manor's only point in Austria, putting them ahead of Sauber in a crucial long running battle for column 1 prize money. 16 finishers in that race, a point earned on merit not retirements.
Compared to that Rio had nothing, best qualifying 17th and best finish 15th (out of 15 finishers).
Esteban, let's see how he fares, it's early days and he's starting mid-season. If he can start getting close to Werhlein will reflect well on him, but getting beaten badly would kill off bigger teams interest.