LOL, you left out some crucial details.Federer's main rivals in his peak were guys who only beat Sampras because they enjoyed 10 years age advantage and also due to changing ways of tennis from SNV to Baseline era. Otherwise Sampras would have deep fried these hewitt and safin types crispy if he was at their peak. Stop trying to market 1-2 slam winners as Gods. We've all seen that era, it was a weak era, the post 2016 era might be weak but then so was the era before 08. Had Nadal been 1981 born then there is a chance Federer would be stuck on 7-8 slams.
Young Safin, Hewitt, Roddick and Federer beat Sampras when he was 29/30 years old. Federer's high level competition is the norm across all era(except the CIE) because they kept the previous era at bay and force them to retire early. The best players were all in their 20s when they are at their best/prime years. Since Federer won his first Wimbledon, no player in his 30s has ever won a slam nor reaches #1 in the world.
Unlike the CIE, the 90s born players are in their 20s and are at their peak/prime condition can't hold a candle to the the big 3 who are in their 30s. Djokovic has inflated 12 slams in the CIE when he's well past his prime. Only this weakest era in history for this unusual event to ever occurred