This in spades. Russell has spent three years trying to get the best out of terrible cars at the back of the field. He is used to having to fight with the car to get it to work whereas Lewis has got used to the car working the way he wants it to as the Merc designers build it to suit him.The last race Russell benefitted from a tow from Lewis during qualifying. His experience with the poor handling Williams cars may have helped him to adjust better to the new car than Lewis who liked his cars to handle his way .
Luck has played a big part as has Lewis taking on most of the experimental setups whilst George has had the more tried and tested ones.