Ricardo, look at the actual facts:
Nick Kyrgios Wins vs. Big Three
Wimbledon, 2014: defeats Rafael Nadal 4R - Nadal was ranked #1, just a few weeks removed from winning Roland Garros...close enough
Madrid Masters, 2015: defeats Roger Federer 3R - Federer was ranked #2....close enough
Acapulco/Indian Wells, 2017: defeats Novak Djokovic twice - Novak ranked #2...close enough
Never did I say that they were in their peak or even simply close to their peak. I wrote close enough. Again, meaning at the time Kyrgios beat them, they were all "close enough" to their peak for his victories over them to be meaningful, especially in light of the fact that no other young player - or player at all - has beaten them to the tune of a 4-1 record.
Now stop already.