The Cherries twice came from behind for the draw, with United also having Harry Maguire sent off at Dean Court.
Iraola said afterwards:"We wanted three points and we played well enough but they looked dangerous every time they came forward. We played really well and at the end, probably because we finished against 10 men, we were the closest team to winning it. It's a challenging game against United.
"Now we have the advantage we can see replays quickly and I didn't think there was anything in that one (Amad).
"I think the Evanilson one and the Matheus Cunha one are both penalties because defenders lose the position and then the Amad one is never a penalty. We asked for one in the first half - Harry Maguire with two hands behind his back but I don't think that was enough for a penalty either. I don't think there is much to discuss.
"A draw against United is a good result. But 15 draws, some of those we deserved more.
"We have equalled record in the Premier League with 11 games but it's going to be very difficult to beat it because we play Arsenal away next. We will have to be very good to beat that record."