The kings of Africa beat Vita 3-1 in a CAF Champions League tie in Kinshasa on Wednesday, having opened their Group C campaign with a goalless draw against Ethiopia's St George in Tshwane.
Sundowns were initially knocked out of last year's competition by Vita but were reinstated due to the Congolese giants fielding an ineligible player earlier in the tournament. Pitso Mosimane's men went on to lift the trophy.
Vita was the first club Eymael coached in Africa, guiding the outfit to league honours in 2010 and the second round of the Champions League before resigning in 2011.
"The win of Sundowns was really deserved because they played better then Vita Club. They were faster, good combinations and most of all they played better football," Eymael tells KickOff.com.
"It was total football with better movement and better combinations from everywhere, that is a matter of training. And you know I lost two times against Sundowns [as Polokwane City coach].
"Pitso has been there for a long time and he's bringing something very strong. He's got the results because he also has the means to get very good players.
"You must also know one thing, the league in South Africa is very strong in Africa now and I made mentioned that previously. It is stronger than in Congo. In Congo, you have Vita Club, Motema Pembe and T.P Mazembe and after that that's it, it's finished.
"You saw SuperSport United won easily against CF Mounana in Gabon [in the CAF Confederation Cup] the team that I know also. You must also know I have been a champion in Gabon [winning the league with Missile FC] and unfortunately Platinum Stars didn't do well [losing 4-2 to Mbabane Swallows]."
Eymael believed Downs are on track to advance to the quarter-finals of CAF's premier club competition, as are SuperSport United in the second-tier Confederation Cup.
"In group stages of CAF Champions League when you play six games and in those six games you play three at home. If you take nine points at home and one point away you are surely qualified," he says.
"Now Sundowns did the opposite; they drew home, and now they won away so that means they are still on a good track. It is exactly the same thing with SuperSport: they drew home and they won away.
"If both these teams win the next games they'll have 10 points and they are qualified to the quarter-finals," concludes Eymael, who appears to be in limbo at Polokwane City after being ordered to return by the PSL's Dispute Resolution Chamber.