theyoungest said:If Cav started the sprint in the same position as Sagan, he'd have finished 7th as well. So it's not really relevant.
Generally, poor positioning is the rider's own fault (everyone's unlucky sometimes of course), and in the end it doesn't really matter what exactly was the reason for not winning.
I suppose your point is, that this 7th place doesn't say anything about Sagan's form, but Cavendish rarely makes mistakes like that regardless of form.