User blog comment:CoGreen2.0/Sky Vs. Zoey/@comment-24152851-20141013233856

There will always be people who keep on saying Sky was meant to be Zoey's replacement, but that comparison is just dumb. They look like each other, but other than that their plots went in opposite directions.
 * Zoey came on looking for a relationship, Sky was against a relationship from the start.
 * Zoey is uncertain and shy (leading her to be compared with Beth), Sky is a natural born leader.
 * Zoey is ignorant (or some would say dumb) and let herself get toyed with by Scott and Mal, Sky is the first to spot the antagonist twice (being the first to discover Scarlett, and established the first, major, two-sided conflict with Sugar).
 * Zoey leapt into Mike, Sky pushes Dave away.
 * Zoke was painted as the "happy ending" couple, while Skave had the worst outcome possible.