Agree. Fully.Small tournaments are often tougher to win than bigger tournaments if the field is very strong. That's obvious. For example when Pancho Gonzalez defeated both Ashley Cooper and Mal Anderson by a combined match total of 34 wins to 0. Considering Cooper won three of four majors (only missed the French) in 1958 and Anderson won the US Championship in 1957 you could argue that to defeat Pancho Gonzalez just once is tougher than winning several majors.
On a slightly different note, this is another one of the incredible performance by Pancho Gonzalez, to defeat two top major tournament winners without one loss!