He didn't fought kisame not directly and when kakuzu got serious he almost rip his heart out thanks to back up. Shikamaru handled hidan don't get where babysit maybe ino because chouji contribute to the fight. He fought armless deidara, he became bedridden after kamui'in that explosion if not for th people around deidara can just come back and get him. He beat a nerfed obito. What m saying is that at that time he faced them he would have lost to all of them except hidan.
I knew you were speculating.Kakuzu almost got his heart but Kakashi had still kamui, as he said he'd kamui him as last resort and at that range it's a one shot, he just waited for Shika when he gave him blood instead of waste a kamui.
You missed half of the fight when Kakuzu and Hidan made their combos, Kakashi handled them and saved them many times.Again you're speculating and searching excuse, i can also say Kakashi was exhausted from Itachi's clone fight but it doesn't matter. and no Kakashi didn't need to use kamui in that explosion, he only used to save others, he could just use doton underground like Deidara did.Kakashi warped his arm, Deidara was escaping and he feared Kakashi, i coutned as Kakashi win.The fight against Obito, they were both exhausted but still Kakashi win despite having less chakra, Obito could escape kamui dimension despite his defeat whereas Kakashi was out of chakra.What you are saying is only speculation, it's like me saying Kakashi would have win all his fight with kamui, you're just speculating and invent stuff like he'd loose to all whereas the manga proved the contrary.