"I'm disappointed with the final result, but it was a give-and-take situation," he said as quoted by SNL24.
"I didn't expect Friday's line-up to perform so well in Egypt.
"I believe our substitutes were the only aspect that let us down. Apart from that, the boys played very well. It's unfortunate we couldn't convert our opportunities.
"We gave away too much possession. After taking the lead, I thought we were home and dry, and we should have maintained that lead," Mbuyane continued.
"When you're playing away and leading 2-1, that's what you need to do.
"Defensively, we were not comfortable. We weren't the Pirates team I knew. Our defence did not perform at its best."