Well, lets compare a 12 week cycle of Test E and Test Prop. Same dose, same length of time.
The Prop will kick in sooner and you will have more use of it, thus making the prop the superior steroid whereas the enanthanate will take longer to kick in so you miss out on that quick delivery. By week 12, they should both be giving you the same amounts of anabolism, but the prop acted early in the cycle so you have that advantage as well.
I use Enanthanate because of less injections.