I think the main differences come down to rocker, flex, and shape. The Prodigy is a lot more tapered and has more rocker, which makes it significantly looser, less prone to hooking up into a turn when you don't want it to (e.g., when pivoting through trees or on an under- or over-rotated spin), and also makes it initiate turns less eagerly (i.e., it doesn't "pull" you into a turn). The Prodigy is also significantly stiffer and heavier, which helps make it blast through chop better than the CT 2.0. So the more you prioritize stability and / or a looser feel, the more the Prodigy makes sense. The more you want a more traditional feel on groomers and / or want a ski that's easier to butter and press, the more the CT 2.0 makes sense.