Let's not underestimate Parker's Power, he would go strong against Usyk and win a couple of rounds...
Usyk would comfortably outbox him at worst. But at 38 y/o it's always going to be Usyk vs a tag team of *insert whichever opponent's name* + Father Time And in addition to going 1 vs 2 against a tag team of his opponent and Father Time he's also playing Russian roulette with at least two bullets in the chamber campaigning in a division he doesn't belong in full of giants and massive punchers who are way bigger and heavier than him where one slight mistake can result in instant disaster And not only that but almost all of them sans one or two are younger or much younger than him and in their primes and obviously his speed, reflexes and reaction times are integral to his success at HW and decline with age and his have already been doing so for a long time
I think Usyk beats him and pretty easily too. Parker's good but doesn't do anything particularly remarkable, and not one of his recent opponents has been even slightly suitable preparation for going up against Usyk. Could see Parker maybe having some early success but Usyk would be able to adjust to it pretty quickly and up the pressure on the way to a very comfortable points win, maybe even a late stoppage. Even so, I'd rather this be what happens next instead of another fight with Dubois. I'm still hoping like hell Turki's changed his mind about the rematch and is looking to get a fight with Kabayel or Parker made next. I know the odds on that ain't great, but I'm tired of seeing my favorite boxer in rematches, let me dream damn it