All I can really get from the clips that Batista is a pro-wrestler turned B-movie actor.
Maybe he will be able to fulfill what is needed for the role, but we'll see. Marvel rarely lets us down with their casting choices, so I'm willing to give them benefit of the doubt here. Since Guardians was rebooted as a comic and they revitalized the Drax character, he's basically been Kratos/Riddick-lite. So maybe Batista is suitable in that respect, a big dude that looks like he can rip aliens apart. A better example might be if this is a similar role to Tyler Mane as Sabretooth, then with that I think Batista can work out fine. If you remember in X-Men, Sabretooth didn't have to do a lot. He looked and sounded mean, only had a handful of lines, and was there to give Wolverine a big challenge to fight. Most of the "acting" was left to the likes of McKellan and Stewart.
At the same time, I'm going to have a hard time enduring all the exclamations how awesome an actor Bautista is and that he blew everyone away from the other crew members. Look I'm not saying that's impossible, but don't expect me to believe he's this master Thespian all of the sudden and there was no one else they could find.