Once they weren't under threat, the Ferraris were pretty much cruising as well. So that piece of information doesn't tell you anything.According to Lewis, Ferrari is not really that dominant as they seem to be last Sunday.
Lewis ultimately finish 32 seconds behind Kimi was due to traffic and his 3 pit-stop strategy.
Lewis started to drive conservatively once he realised that victory was out of reach when he was 20 seconds adrift at that time had gave Ferrari further advantage.
I do believe the performance gap is still very close between the two teams. But Ferrari have definitely closed the gap on McLaren whom they've struggled to keep in touch with in Canada and USA.