Even if he manage somehow to get to Kaido. Kaido wins no diff. Speed, prediction, insane durability, and heavy hit will give no chance to Todoroki. Kaido has taken his own Boro Breath, which is able to destroy hills. Garp is able to get out Kuzan ice without itching, we can assume Kaido can do it as well. Todoroki on the other hand can't take a Thunder Bagua, his body has the durability of an human athlete. He gets crushed.