I'm so used to my own style of writing. It's the way I talk and the way I think. Most of the things I do read are of a similar style to mine. But every now and then, I find something which is just patently not mine.
It is amazing the levels at which something can sound not like me. The words used, the ideas expressed, the examples used to express them, the rhythm and melody of the voice.
Some discrepancies between authors is to be expected, but there reaches a point when somebody's writing is so different from mine that it is a shock to the system.
I like those shocks sometimes. It's a nice reminder of how very much else is out there in the world, and how very much writing can do.