I think given that we are heading into the back end of the season, you would expect the bigger earners to be playing more often and more up to the standard you would expect from those big earners.
Lets face it if Greenwood was playing, or Jones was playing, week in and week out, at this point of the year. Then Sia/ Manu/ Wilkin/ Flanagan would be missing out on a spot. (also Wellens if he was doing his bench stint)
If that was the case then the big earners are slacking. A week or two back I'd have argued that LMS could be one to miss out, but from reports on here he has upped his game.
Mose would have been out by some from the start of the year, but has also upped his game.
Really the 2nd rowers quality has not been called into question.