Honestly, the Marley Titans got set up. If you see the part where Armin transformed into the Colossal Titan everyone's attention wen to him. As you can tell, the explosion from the transformation was huge as hell. The blinding light, plus the steam that radiates from the colossal titan blinded everyone. This, caused the Jaw Titan to make a mistake and break formation thinking he would take Eren out in the confusion, not realizing Mikasa was screwing him up. Prior to that it showed Levi hiding in the shadows, as the Beast Titan called him out.. with this confusion, Levi being badass he is, screwed Zeke up in literally one move. Then he proceeded to blow his neck the hell up, the grenades and guns they are using are definitely useful additions. Especially when facing shifters. Its been seen most times, they can regenerate from outrageous wounds. Hell, Reiner grew his whole head back after having it blown off by Mikasa.
I honestly think Levi just wrecked Zeke. I also like how they messed up the Cartman Titan... Jean better just blow Falco away is all I know.