Lewis is certainly in the conversation for best ever (not going to re-open that whole debate...again) but there's just so much bollocks in that article that it's hard to take it seriously.
For a start, Berger doesn't see anybody near to Ayrton prior to Lewis!? I was heartbroken when Ayrton died, but fuck me, if he was alive today nobody would be talking this crap. Prost outscored him for two seasons straight in the same car, so: "I always, in all the years, say: 'I don't see anybody near to Ayrton." is complete bullshit. It's the same romanticism of the dead that we see with Lennon relative to Mcartney and completely disregards any objective analysis and the facts.
Berger doesn't even give Schumacher - a man who won a championship in a car Berger couldn't even drive- the time of day in the conversation and then finally rambles towards the conclusion that Ayrton would still 'win the game' because he was more charismatic. Hmmm.
Ex-drivers are like ex-footballers in the sense that they may very well have 'been there and done it' but they still often tend to talk an inordinate amount of shite.