I wonder then how you explain Schumacher losing to Rosberg ?
There are some excellent answers to this question already so I'll focus on Schumacher's loss of reputation instead.
When he returned in 2010, Mercedes and Schumacher expected to put up a title bid. It was clearly stated in all the annual previews of the season.
The reigning championship team, with the super Brawn car, now with Mercedes money and Schumacher driving....how could it be otherwise?
The disappointment was great but Schumacher & Mercedes were forgiven a bit because Brawn's lack of funding in 2009 was made the scapegoat. But as the years rolled by and Schumacher didn't do great feats and indeed Rosberg was as good or better, his reputation received a severe hit. From him being 'over the hill' to 'was he ever that good?'.
And this was the most successful driver in history.
So if Schumacher's abilities could be questioned after failing to beat Rosberg, as Hill's was after failing to beat Diniz, why do people think Kubica will get a pass? You simply have to beat or at least consistently match your teammate.
And if the point is that Kubica is rusty and just needs time to get up to speed, just like Schumacher did.....
How did that work out for Schumacher? His contract wasn't renewed and his reputation and legacy was damaged.
Kubica could have sharpened his skills by driving in other series before attempting a F1 comeback. He didn't.
So I am not sure it's a valid excuse as I don't think Williams is willing or able to give him a couple of seasons to get back up to speed.
Edited by taran, 25 April 2019 - 09:32.