Originally Posted by
spartacusmcfly
Is the 1K really worthy of zero upgrade benefits, while the GS gets access to 1/4 of the J cabin?
Yes.
Originally Posted by
spartacusmcfly
Sorry, what does x4-x10 spend mean? Are you saying a GS typically spends 2.5x more than a 1K in a calendar year?
No, that's somewhere between 4x and 10x (or more).