Schumacher was great competitor, but he suffers from a few things. He was a cheat, somewhat like Senna, and not above driving people off the road to win titles. He was probably banned or penalised more than any other top driver ever. He also suffers from a lack of competition. You could argue that Hakkinen was a great driver, but his other rivals are in the good, not great category. Hill and Villeneuve won titles but weren't in the same class as the GOAT types, other drivers wining races regularly were Coulthard and Barrichello. Compare that to the 80s when you had Prost, Senna, Mansell, Piquet, Rosberg and Lauda all winning. It's also worth remembering that most of Schumacher's wins came under a rule set that broke races into sprints between pit stops. He also destroyed his team mates and had car and tyre combinations built solely for his driving style. Alonso is strange in that he may well be one of the best drivers in the sport (perhaps second only to Hamilton now) but his heart doesn't really seem to be in it. He has also crumbled under pressure from his team mate.