I think he would've gotten a fight against someone like Smoothie (probably wouldn't be too difficult but still) since he acknowledged that there wasn't need to start too much trouble with 2 Yonko. He'd probably just follow the plan to go in and ruin the wedding, try to assassinate Big Mom then bail with the crew. I doubt he'd say 'screw it,' and start a 1v1 with her. He'd probably try to get a hit in like Luffy but I don't think much else.
No FS/AdCoA Luffy and No Enma Zoro gets raped by Big Mom. Zoro ain't even beating Katakuri, who Luffy needed to develop Future Sight, and use a version of G4 that was too fast for even Future Sight to pull off the W.