Sundowns missed out on an opportunity to move within five points of log leaders Kaizer Chiefs as they failed to beat a resolute Aces defense.
However, Mosimane has criticised the match referee for his performance in the middle of the park after some questionable decisions against The Brazilians.
"I think we gave it our best... But what do you say to your players after all this?" questioned 'Jingles'.
"I think Thabo [Nkosi] must be the man of the match hey? Thabo did very well, he stole the show!
"He reminds me of [Victor] Gomes - he also steals the show," he added.
There was drama aplenty as referee Nkosi awarded two penalties - one to Aces and one to Sundowns.
Controvery hit at the end of the match as Bongani Zungu had the ball in the Aces net in the final minute of the match, but Nkosi reversed his decision and signalled for a foul on Jackson Mabokgwane, much to the Downs coach's dismay.