Mansell won one world championship but didnt he also fall out of another one a year or two before because of a flat tire at the end of the season (not last race). He was doing good just needed points at that race also to win. He was very close to two world titles. Also Senna for the most part had a faster car than Mansell did most of the time, Mansell just out drove him on many occasions. The Maclaren was kick ass. I honestly feel Mansell is just as good as Senna, Senna just did a few things more right and had a better venue. Swap them and Mansell would have had three world championships. Prost is faultless, everybody knows that, spectacular.