If Ocon looked faster than Perez, he would have gotten closer to Perez, saying you're faster doesn't mean much of anything. As Brundle said with his story, his team mate said he was faster than him every lap, every driver (should) believe that.
Max wouldn't have waited on the team, he would have shown he was faster by getting within half a second and trying the move. Ocon never got close enough to make a pass till after DRS was broken and when he still had it, which suggests he really wasn't faster.