I have these two growing next to each other in my tank, and honestly from your pic I can't tell which one it looks more like.
You'll know soon enough. The stuber exploded in huge growth patterns expected for A. Formosa, while JTC colors nicely and grows in a standard tabling acropora formation.
Either way, they're both nice corals! Oddly enough, my stuber stag grew entirely new growth from the base. Whatever small growth it had from the prior tank it was in hasn't moved an inch since I introduced it almost a year ago, but man, it sprouted other giant stalks, and they've grown immensely and opened up a few new growth "knots" where multiple axial corallites sprouted out. Super cool coral to see, though I'm learning it can take up room rather quickly in a tank.