the Eighties you had more than 3 great players (Borg, Mac, Connors, Lendl, Edberg, Becker, Wilander - okay Borg only at the start) & the rest of the field included players such as Cash, Mecir, Leconte, Curren, Noah, & later, Agassi, who were all capable of beating the best players on the biggest stages & at least getting to slam finals.
Agassi should be counted in the 90s rather than in the 80s or in the 00s.
Leconte was a huge talent and at times, brilliant to watch but if he were active today, people would call him a choking mug. With all his talent, he doesn't have much to show for it.
Cash and Noah had 1 slam each. You could just as easily bring Roddick, Del Potro, Moya,...to the current table at this rate. (well, Moya is no longer active but has played against the current top players)
Not forgetting Safin and Hewitt with 2 slam titles.
I can understand that people moan about today's players because that's fun but they're getting often too nostalgic about previous players in comparison.