I will lose all respect to Klitschko if he loses to fat Fury. I won't lose any if he loses to in-shape Fury, since he already did. He did not only lose, he barely won a convincing round. The manic Fury that showed up for the first Klitschko fight, had his number.
Tyson Fury to me seems like a man in doubt and torment, I do not know if he has it in him to show up in shape for the night. It seems like he figured that becoming the world champion would've made him more accepted, and so he worked like a maniac to accomplish his goal, but he has only become more hated. He could be a broken man at this point. Some people aren't meant for long-time success, but that doesn't take away from their peak capabilities. At his best, Fury whipped Klitschko soundly.