The Eagles took command through Glenn Murray's double but substitute Nikola Zigic and Papa Bouba Diop earned City a share of the spoils.
"So far as I am concerned it is deja vu," said former Blackpool boss Holloway. "The last time I was here we were 2-0 up and looked as if we were cruising and ended 2-2.
"It felt strangely strange. You have to give Birmingham credit but we made one or two mistakes after they sent on Zigic and we looked a little vulnerable.
"All in all I still thought it was a very good performance. I am probably disappointed with Birmingham's second goal as it was a free header from a corner.
"But the defining moment for me occurred when we had a breakaway before scoring the second goal. (Andre) Moritz hardly ever misses in situations like that but he went over.
"But give Birmingham full credit. Lee Clark's teams hardly give up. They are not having it easy and the season has not gone their way."