If you say so. Campy's chainring spacing only shrunk by .25mm, and Shimano's 11 speed chainrings are spaced wider apart than their 10. People have been claiming something like this since 7 speed came out, but there doesn't appear to be much to it.


None of which has anything to do with bushing width, which was the point I was making - 11 speed chains will work fine on any multispeed crank's chainring tooth profile going back to those for 5 speed chains. The chains got narrower by thinning the plates, which necessitated different pins because of the decreased contact.