Was it a proper keema naan? Sometimes there is barely any Keema in it.
To be honest I don't have much basis for comparison. I normally go for just a plain naan or once in a blue moon I'll get a cheese one. I think the only time I've had keema naan before was when someone else ordered it and I had some of theirs. It wasn't exactly stuffed with meat, but I think what was there was fine.