People really cannot read. Kuzan at the end soloed garp alone (Shiryu and others were far from the scene, they're separate from rocks and Kuzan's cold air, it's prespective and they're distant from the scene, they Just got close at the scene watching Kuzan finisihing Garp, Oda Is not really good at making It clear but it's Just like the panel in wano with every SHs with Sanji being "ahead" of Jinbe and people not being able to catch It, thinking that Jinbe was the one close to luffy and on his side, while Sanji, Zoro and Luffy were "ahead" of others SHs as always.
Kuzan wasn't serious as garp said he was wavering, he wasn't as resolute as against Akainu, his dead-inside face says It all. Regarding Woby, clear adv. Coc, oda Just made the lighting shorter to imply he still Has to grow, but they're too thicc to be simple armament.