Ok, when did the FIA change the rules to suit other teams? If you remember right, the FIA changed the rules "mid season" to rob the Michelin tyres of the advantage they were gaining over Ferarri, didn't they? And which team was losing out when they went to "single set of tyres" last year, which resulted in the change back to changing tyres in the race?
Oh, Michael didn't win through cheating.... Let me see, there was a Benetton which was running "too low", bargeboards which flexed a bit more than they should, ramming/attempting to ram people off the circuit (damon hill/jacques villeneuve), illegal team orders, flexi wings, different compounds of tyre on rear wheels, illegal blocking, deliberately trying to cause a red flag at the start of a race (austria 2000), brake testing drivers, forcing people off the track (just ask Alonso a year or two ago, or even Michael's own brother), illegal "simulated" traction control....... I could go on.
But none of that is cheating, is it? It is a shameful litany of failings from the FIA to punish a team and driver for the multitude of infarctions they have been allowed to carry out over the years though.