Johansson was that bit more proven at his best. Schulz didn’t really beat anyone, he’s known for that one fight against Foreman where he got robbed, but Schulz was mediocre outside of that. He didn’t use his jab particularly well, didn’t extend his punches, didn’t have an exceptional defence, wasn’t explosive nor had much power, he just wasn’t stand out in any area. He just went in there and fought an awkward fight that a 46 year old Foreman found hard to time and deal with. I believe Johansson would have that bit more quality at his best, he’d find the straight punches through the basic defence of Schulz. He’d be quicker than 46 year old Foreman and in some ways his smaller size would be an advantage because he’d be able to keep up with Schulz, he’d have that timing and would have the speed to get through the basic earmuffs defence of Schulz unlike old Foreman, and would be able to line up and time the awkward in and out attacks of Schulz.