Lot of truth to that statement. I worked 21 years for a Japanese heavy industry manufacturer in the US and all of my trips to Japan for meetings generally ended up with 3 or more of the Japanese Directors and me romping around naked in bed for hours at a time. Of course I'd like to think I was the best cocksucker but the old fuckers I dealt with in the company were pretty good as well... nice cocks to boot.
When it comes to sucking cock, enthusiasm for sucking counts the most and nearly always produces the desired results - heavy cum given by the one you are sucking so enthusiastically.