According to the Football411.com website, the Brazilians went behind to a Thamsanqa Gabuza goal in the 38th minute, but hit back just before the break courtesy of an own-goal from Siphamandla Sithole to rescue a point at home.
Mosimane, though, was less than impressed with some of his players, and let them know exactly what he thought of the performance after the match.
He said: "If you don't start very well, you always going to have to turn it around in the second half.
"I'm not very impressed with some of the players here tonight, and some of them must go to the bench, because we have some one-game wonders out there that can't do it game from game.
"We could have scored so many chances, but we made so many mistakes."
Sundowns looked to have won themselves a second-half penalty after Edward Manqele was up-ended by Arrows goalkeeper and Man of the Match Nkosingiphile Gumede, although the referee failed to spot it and waved away the appeals, further infuriating the former Bafana Bafana boss.
"It is a foul. Non-negotiable . It is a foul and the official got it wrong," Mosimane fumed.
"Arrows had their chances, but we had ours, so many, and we hit the post.
"Hopefully this comes as a big wake-up call for the Nedbank Cup, but tonight we have no excuse."