First line is incorrect. Toughest fight was against Briedis. Arguably the second toughest was against Bellew. Chisora was easy, as he outlander Chisora in 9 of 12 rounds and staggered him. Easy fight with blind judges. Joshua was a good fight. Sorry, didn't even read much of the rest, but Fury has openly admitted to having difficulties due to physical decline. I have seen the interviews myself.