5 second time penalty for missing an option "I' not sure" =))
Having the best car of the grid is one factor of Lewis' success.
He has usually had a half-decent car at least, but for periods of time in his career (at McLaren), far from the best. Despite that, he was always securing victories, podiums and pushing the better cars all the way. He almost always pushed a weaker car to it's absolute limit making it look much better than it was. Even though he doesn't have to do that right now with the car he has, I would argue that he is a better, more consistent and mature driver than ever.
Hamilton has always made teams better and the cars better by his presence - when he has joined, everything including the car has always improved, and when he has left, they have always declined - one of the marks of a great F1 driver (and one of Alonso's weaknesses despite his superb driving ability). I can only assume that Hamilton is particularly good at providing useful feedback on the car to his team.
And Fangio, Clark, Stewart, Lauda, Senna, Prost, Mansell, Schumacher etc
If anyone made cars look better that is Vettel. Won with Toro Rosso, won with Red Bull and both teams never had victory before, especially RB being first team. Also won with Ferrari in only his 2nd race in days Mercedes dominated, and he just entered a team who was in very bad situation the year before.
Hamilton never had a bad car. He drove McLaren from day 1, and although he drove it and earned it on merit, he never had a bad car, that is a fact. He always drove a car capable of winning race or even titles, but really just wasn't able to pull out the maximum out of it, and it wasn't like they won a lot because of him, Button was winning regularly and quite frankly was much better in complex races that included rain, which is another criteria to measure drivers.
No one to this extent.
I don't think that Mercedes have had a more dominant car than certain other manufacturers when they were at their peak to be honest... Lotus at times, Williams at points in the 80s and 90s, Ferrari in the Schumacher era, Red Bull more recently.
Most dominant car ever was the McLaren MP4/4 of 1988 with Senna and Prost which had 15 poles and 15 wins out of 16 races...
Point is, there have always been eras where certain teams have had very dominant cars - now is just the latest example although Ferrari's car at least has often been up with the Merc more recently.
It's not about the peak, it's about the time they dominated.
Almost every strong domination be it Williams year, McLaren year, Ferrari year or Red Bull 2011 year, they finished and followed a season with big uncertainty.
To put it into perspective, Mercedes are dominating for 6 years straight
Not exactly true. Plenty of teams have had decent stretches of domination. Ferrari in the Schumacher years and Red Bull with Vettel being the best recent examples.