Does the Attack 12 have the same delta as the 13?
I'm not sure what you mean by delta. In doing my reading, they both have the metal heel plate - the primary difference is the DIN range and then of course, the color. Other than that, I think they are identical, from what I can tell. When I looked at the specs, they even weighed the same.
@Philpug - do you know how adjustment is available on the Attack 13s (non-demo)? Like if they are set up for a 266 BSL, how much wiggle room is there to go up? Would it accommodate 10-15mm? (I might get new boots in the next year or two and I know the Lange 22.5 shell is 276 - not that I will get Lange, but just want to know.)