The orphan rate depends on luck and how well the pool is connected to the network. Basically two pools both mined a new block and sent it out to the network, and unfortunately your pool's block didn't win. The network consensus was that the other block was first.
It's worth comparing pools by their orphan rate, not just by fees. On pools running MPOS that's fairly easy, look at the blocks page and divide orphan/found for the week.
On pool.dogechain.info that is 2/139, or 1.44%. On doge.poolerino.com that's 8/194, or 4.12%. Essentially Poolerino is charging a "pool incompetence fee" of 2.68% over dogechain's, which is a more significant cost than their deliberate fees.
Unfortunately a lot of chains don't share this data, so it's difficult to see how well they are doing. dogepool.pw doesn't show the weekly numbers, but would show orphans in the payments, and were over 10% when I was using them. Not worth mining blocks for a pool if they're going to lose a significant portion of them.
Thank you! This is the info I was looking for. I have been on poolerino for a week and thought something was off. Just started to look into it today. Their front page and ANN thread mention a recent attack but no further info.