Reasons:
The reference should be permenanently displayed during Absorb and Memorize games so that the user can associate the text with the reference while they are learning. Just quickly displaying the reference at the end of the game will not effectively teach the user the reference since it flashes by in an instant and easily forgotten given the fact it carries no sensible connection to the verse itself (i.e., the verse is easier to remember because it is a sensible collection of words former a coherent thought, the reference is just a [to the brain] random set of title and numbers without any cohesion). As such, references take more effort to remember and should correspondingly carry a more prominent place in the Absorb and Memorize games.