Thanks for the reference. In descending order I am probably Immersionist, Architect, Tactician.
I will take issue with their characterization of Amber Diceless as very Striker-ish. The rulebook does talk a lot about PVP, because that mirrors some of the source novel content but I know a lot of the Amber community and I would describe them as immersionist tacticians.
Crunch is rules and Fluff is background (reductio ad absurdam). Amber would be categorized as heavily Fluff and GURPS and Rolemaster are usually quoted as Crunch. Though I have often seen GURPS used purely for its architectural abilities to build characters and worlds and played in a very rules light way with few dice-rolls-and-modifiers.