Djokovic defeated Federer 6-4, 6-4 in the final of Sunday in Ohio to win the tournament for the first time after losing five previous finals.
The victory meant Djokovic became the first player to win each of the nine Masters titles.
Djokovic also canceled each of the Grand Slams while winning the Tour Finals on five occasions.
The 31-year-old, who won Wimbledon earlier this summer, is now entering the US Open in the US Open as one of the favorites.
But Federer believes that winning the Golden Masters battle may well be seen as Djokovic's greatest achievement ever.
"All these records that a player makes, at the end you go all together review, bundle it and say:" Okay, what was the coolest thing you ever did? ", Said Federer.
"This may be for Novak besides winning all the Slams and all the other things he has already done."
"He is a great champion and that should be about it. history.
"We can go which points you want, but I think that's what the headline should be about.
"This is an amazing achievement, and I hope he is extremely proud and very satisfied with this moment."
Federer looked nervous during the final, faced with breaking points of the very first game and Djokovic took full effect of the uncharacteristic mistakes of the Swiss legend to form the first set.
Both players were broken in the second set but as soon as Djokovic broke into the seventh game of the set, he continued to win the title without any problems.
But the Serb was quick to honor Federer, who won 20 Grand Slams during his illustrious career.
"It is of course a very special moment to be here with the trophy in Cincinnati," said Djokovic.
"I have played five finals before and I have lost most of them to this great man, thanks to Roger for winning me here!
" It was a difficult match for him. He probably did not feel that good, but he is a great champion and probably the best to ever play the game. "