I am pretty sure by "how far from" he meant the delta of magnetic north to heading angle. Since an Apple watch doesn't have the ability to vibrate any where except the watch body it can't "point" at magnetic north like the North paw does, it would have to indicate magnetic north some other way.
Yes, this was my (clumsy) intention, 'far' in the sense of angular deviation. The thing about our analog brains is that we are very good at processing signals that vary proportionally to some quantity but not very good at internalizing 'limit switch' type signals.
