Statistics dont demonstrate the enormity of what Schumacher achieved at Ferrari (or for that matter, Benneton considering that fight was virtually like today's Renault (Benneton) v today's Mercedes (Williams).
Ferrari were a joke when he signed up. They were quite literally the laughing stock of F1 and their cars were a pile of crap. Alan Prost once described them as a truck and got the arse for it. F1 used to be a very different game before the now uber polished professionalism. Between himself, Ross Brawn, Rory Bryne (who by the way, makes virtually every other f1 designer look second rate) and Jean Todt, they completely changed F1, but he was the major driving force behind it.
I struggle to think of any driver in F1 History who on two occasions, took some average machinery and teams to world championships. Most of the time WDC are in the right place at the right time and hardly jump to fledgling teams to rebuild them. Usually theyre fleeing them before they sink (see Senna at McLaren).
Senna is probably the single most talent driver of all time, but Schumacher was ultimately the complete package of a driver. Hamilton for all his worth, has been beaten by team mates during the peak of his career. Schumacher didn't lose a team mate battle between 92 to 2006 and only when he came back to a very different sport and at age 40 was he beaten again. You can say look at his team mates, but as one of his team mates of the time said, you could put anybody alongside Michael and he still would have beaten them during that period.