Lets not get ahead of ourselves, fight hasn't happened yet. I'll call it as I see it pal, as always, as we all do. Whyteleafe deserves credit for fighting a guy in his prime, although a quick check suggests this is his only third prime guy in his last 12 fights. Matchroom heavies LOVE a shot to pieces old name fighter, not sure anyone can dispute that. Wallin has been in with an ATG in Fury and more than held his own, would be in Whyteleafe's top 3 wins (UNLESS via matchroom scorecards)
Fighting a padded record unproven fighter who caused a past his prime Fury major issues is not on the level proven world level guys such as Povetkin, Parker or even a high Euro level guy in Chisora. I don't even think Wallin would be amongst Whytes top 5 opponents he has beaten (Povetkin, Parker, Chisora, Rivas and Helenius).
People saying Wallin has "no power"... He's a 6'5, 240 lbs SHW southpaw; punches on the chin from him aren't going to tickle. Whyte has the worst chin of anyone considered a top 10 HW, worse than AJ's and "featherfisted cruiser" Usyk was able to not just get AJ's respect but hurt him on multiple occasions and almost force a stoppage at the end. Parker is a light puncher at HW; he couldn't do anything with Cojanu over 12 rounds ffs and lost several of them in his own backyard but he managed to hurt a gassed Whyte with an uppercut, drop him and almost finish him in the 12th.
Intelligent post, Wallin is very similar to Joyce in he throws a lot of arm punches and let's his weight do the work vs someone like early career David Price who was pressured into throwing all punches as bombs. It's an effective style but I think he needs the referee to officiate fairly to have a chance vs "B sample"