You may be correct, but I'm not positive. These maps are used to give you an idea of where a photo was taken, not to provide navigation to it, so detail isn't quite as important. The other consideration is this is one data point. Perhaps Apple did a thousand of these and felt OSM was better.

Or, maybe Apple is going to quickly flame out.

The OSM images that tcard used are from openstreetmap.org, not from the iPhoto app.

My understanding is that Apple used the data from OSM to produce their own tiles, which, I believe, look much better than this.