Replying to Differing skis a waste

So about two years ago when I started skiing park, I was misguided into buying volkl bridges, which aren't very suitable for park skiing. After a season and a half of getting by with them in the park I decided to buy armada thalls, a park specific ski, for this upcoming season. Comparing things like weight, flex, and swing weight between the two skis, they seem very similar. Is there really that much of a difference between these skis, or did I just waste money on a different topsheet?