comparing apples and oranges a little i think.
given the conditions and racquets/surfaces of the time.
the tour was stratafied hugely between the slow courts like clay and
lightning fast courts like indoor.
this made it difficult to do well on all surfaces.
for example 1/4 to 1/3 of the tour was racked with clay specialists like
alex corretja or albert costa who banked big time on clay and then any
good work off clay was a big bonus..eg corretja winning the tour finals.
So does he have a weakness?
yeah..he can't cook - chang talking bout sampras