Nah, Mitch Green hit the prime Tyson quite a bit.
6'5", 29 year old Mitch Green didn't fight scared, and he went the full 10 rd distance with the prime Tyson; Tyson won the Title 6 months after the Mitch Green fight.
They were both contenders at the time: Green with only one loss 9 months earlier to Trevor Berbick, who Tyson would defeat 6 months later.
Green went toe-to-toe quite a bit in that fight, Tyson didn't cave in over it.
It's too bad they didn't rematch down the line.