I agree Klitschko has slipped with age, but Jennings and Fury were fleet footed which was always going to be awkward for Vlads stalking risk averse style. Fury fought brilliantly, but a lot of Furys success was based upon Klit himself.
I think Joshua is an unproven commodity. He hasn't really beat anyone of true world class pedigree, and his performance in the Olympics was considered "lucky" for some of the decisions (Cammarello, Savon etc.) Some people talk about Joshua being this incredible combination and counter-punching machine, but in the eyes of a lot dedicated fans/ boxers he hasn't proven it yet. He is still very raw and appears amateurish at least in my eyes. Seems to pull his right cross short, footwork seems quite robotic and not fluid. Even with all his supposed aggression he took far too many shots from Dillian Whyte in rounds 2 and 3 and seemed to not be able to control the distance for a British level fighter. Sure he is good, but definitely not a level above a lot of the guys in the top 10 which is how people speak of him. He has been constantly KOd and dropped in sparring (even recently by Marius Wach), who has light hands and slow feet. I personally think that as an athlete he is top class, but as a boxer he will need a few more years to develop.
I see Klit establishing the jab and not letting Josh plant his feet to throw his right. It could end with a leaping left hook (eg. Pulev fight) in rounds 1-6, or with a 1-2 in the later rounds as well. I see Josh tasting Klits power and being a little more cagey than people expect, but also vice versa with Klit. I have put a few hundred on Klit by decision (which is paying $7.50 which is crazy given his record.) I think the original poster was right on his analysis.