There will be no “upset” Miller doesn’t have the power for there too be one, on the other side of it suspect as Joshua’s chin may be you have too have that punch too exspose it and miller hasn’t got that type of power for someone that weighs nearly 300lbs it’s average @ best or as one of his previous opponents has said after the fight...miller has quick hands for a big guy...but when he hits you it’s like being hit with a heavy pillow...you feel the weight...but not the jarring impact of a big puncher”.
that’s the million dollar question in regards too when he eventually fights wilder, the thing is with Joshua he has the BASIC fundamentals down pat for a huge heavyweight, fast hands, good defence and add his genuine punching power too that set of skills imo the miller fight will be a farce Joshua will blow him away imo.
Wilder is the dangerous fight for Joshua but then again...Joshua isn’t going too just stand there and give him free shots @ his chin and remember wilder is a very easy target too get hit so the question might be how’s wilder going too handle getting hit hard bye Joshua...