Prost fell out with practically every team he ever drove for. Senna left all of his teams on his own terms (whether they liked it or not) but none of the teams wanted to lose him. Prost was a political nightmare and caused havoc in the teams he drove for. He did get one more WDC than Senna, but his 1993 title was hardly done in glory as he made a right hash of winning it in a car that was by far the class of the field. He should have totally dominated that year. I can;t think of many people who would put Prost above Senna.
I certainly wouldn't... Not sure I'd even have him at #5. To be ejected from Ferrari in the way he was and having to sit out 92 was a pretty clear indication of what cucumber he was.
