FFIV's Main Character

[EveningCross]

I know that the booklet that comes with FFIV says that Cecil is the main character but why does the title art on the CD casing show Kain? I thought that the main character or object of importance was usually shown in the title art like the Meteor in the title art of FFVII or Yuna in the title art of FFX.

EDIT: Also, in the instruction booklet is found this poem... "One born of a dragon (Kain... a dragoon... dragoon=dragon?) bearing darkness and light, shall rise to the heavens over the still land. Bathing the moon in eternal light, he brings a promise to Mother Earth with bounty and grace. " Is that talking about Kain or Cecil?