Valtteri Bottas said this about the start of the Brazilian Grand Prix, when he lost the lead to Sebastian Vettel, who dived into the inside to the Senna S:
"I was trying to cover the inside but honestly looking at the mirror I could only see Kimi (Raikkonen) behind. So, didn't see Seb anywhere. I was kind of guessing that he could be shooting from the inside and so he did." http://www.grandprix.com/race/r975racereport.html
Pretty much what happens when you're playing GP2 from inside the cockpit and without VR equipment and you have to guess what's happening in the side. Again, GP2 showing its realism.