Nigeria's 4-0 World Cup qualifying win was as comprehensive as it was self satisfying for the Super Eagles, while potentially soul-destroying for Africa's champions Cameroon.
Mikel Obi, Ondion Igalo, Victor Moses and Iheanacho were the goal scorers for the Nigerians on the day.
Cameroon face Nigeria again in Yaounde on Monday, but Broos believes the Indomitable Lions have too much to do to qualify for next year's World Cup. Algeria and Zambia, who have one point each, tackle each other in Lusaka on Saturday.
"Why should we have a chance to the World Cup?"
And the result was complete when substitute, Kelechi Iheanacho, headed home Ogenyi Onazi's cross from close range in the 76th minute. It's only by the ending minutes of the first half that the tables turned.
Rohr had hoped to use Aina in the first clash against Cameroun on Friday, but the Federation Internationale de Football Association clearance did not arrive in time.Nigeria have nine points from three matches in Africa zone qualifying group B, while Cameroun remain on two points. "It was a good game but we are happy we didn't let him down", he said.
The coach said the Indomitable Lions, apart from being African champions, had played against hard national teams of Chile, Germany, and Australia in the Confederation Cup.
Meanwhile, Segun Odegbami, Nigeria ex-International player, has advised the team on what to do during the September 4 second leg encounter.
The Nigerian team played with Ikeme at heart, as the Twitter handle of the Eagles wrote during the pre-match conference, "We stand together, in solidarity with our goalkeeper @Carl_Ikeme".