That's a tough question, all I know is that there are many drivers who hope to atleast beat schumacher while he is still racing otherwise they will always be viewed as only winning while he was gone. Currently... That isn't happening

It takes soo many things to all happen to become world champion. Having a good team, having a damn good car, having the best race strategy, and perhaps a little luck goes a long way. It's very rare to see any driver win so much in any sport, and I think we are watching a legend unfold that may never be passed!
Unless you are Montoya who thinks Schumacher is just another driver in another car..