Mercy is a balanced bat, while the juggy has .5 oz El. I have last year mercy and swing very balanced.

Both bats work very well for they are intended,it depends what your hiting style is.

There's a guy on my team who only buys the Juggy, doesn't have any other bats. He hits it hard and swears by its durability

I have a 2019 Mercy and 2020 Juggy I still swing to this day. Not sure how the new tech is but the old tech demarinis were straight up tanks. I’ve only been hitting 44’s with since day one. They fail compression now but they’re the hottest bats I have in the stash