So, Dillmann is champion.
It looks like Celis did everything to help Dillmann and hinder Deletraz (hence the penalty for Celis I think) while Fitipaldi did everything to not help his teammate.
I know Fittipaldi tries to get the best possible result for himself, but team-wise that was not smart.
Of course, Dillmann was just the fastest of the 2, but the Fortec tactics were strange, and he had a bit of luck too (Orudzhev stalls at the warmup lap, slow stop for Isaakyan, ...)
The luck of a champion, probably?