Cardiff manager Russell Slade said: "Rotherham always fight and scrap, that's the kind of team they are, but we had more quality in my opinion than they had.
"Rotherham did not offer too many threats in the first period and I was disappointed to go in 1-1.
"But it's about reacting to such set-backs. But then we got another one, an own goal, against the run of play.
"Our reaction then and our attitude were good, we got the second and had a couple of wonderful opportunities."
Rotherham boss Neil Redfearn told the media: "That is a point gained but, in the context of the game, it might be more a feeling of two dropped.
"I think we deserved to win. We were the better of two good sides.
"They played their part in a good game, but for us to come here and be disappointed with just a point shows how far we have come.
"It was a good football game, although it took a while to come to life. We started slow and they got their goal which was disappointing. "