Did you even read my whole post?How does it not? You actually need an explanation as to why the feud would be excellent? It's two big stars squaring off who have never squared off before, Batista is a great heel and the people love Lesnar, etc. You can easily build an entertaining rivalry between them if you wanted as long as Batista was around for enough dates to properly do so.
The only thing wrong with Batista's run the last time was that he wasn't brought back as a heel (or brought back with the intention of turning him heel shortly after) from the get-go. Otherwise, his run was just fine. He won the Rumble over Daniel Bryan, drew massive heat, put Bryan over, reformed Evolution to put The Shield over, was supposed to put Bryan over one-on-one at Payback but refused and so helped put The Shield over for a second straight time instead, and then left. Don't know what more could be expected from him given the circumstances (the funny thing is, if he had gotten over as a face when he returned, he would have won the championship and ended up being the one to drop it to Lesnar at Summerslam instead of either Cena or Bryan, but that's a different story.)
My only issues is that Batista returning only to put Brock over in one quick program before leaving again might shrink some of the impact out of it. if Batista were around for a short while prior to the feud getting underway and Lesnar was the one to step up and beat his ass out of the company and send him away again, that would be better. But it is what it is.
2 big stars? I can think of lots of big stars that I'd much rather see fight Brock as well as other fans I'm sure.
Regardless of what caused his bad run, it was bad. Very bad. Sure he could come back as a heel and it could be better. But he's coming back from like 4 straight losses and a lousy run. It makes him going against Brock look like a fucking joke.
Not against Batista coming back in some capacity, but to have him fight Brock wouod be silly.