Quick take
Aurora 0% Intro Card fits: Paying down a balance or financing a one-time purchase interest-free.
Fairway Builder Card fits: People with fair scores who want to rebuild with on-time payments.
Fee and bonus math
Annual fee difference: USD 0 (same fee).
Welcome bonuses and spend hurdles are not apples-to-apples when one is cash and the other is points. Value points at a conservative 1 cent each unless you have a known redemption.
Approval path
Aurora 0% Intro Card targets: excellent, good.
Fairway Builder Card targets: fair.
If either card uses a prequalify CTA, start there to avoid an unnecessary hard pull.