I suspect Bruno would do well early on, troubling Tucker with his jab and physical strength but would gas somewhere during the middle rounds and be stopped on his feet, similar to his fights with Lewis & Witherspoon etc.
A prime Tucker tested Tyson. He landed a perfect perfect left uppercut early that momentarily shook Tyson. He made Tyson go 12 and take some punishment. He even won a few rounds. An undisciplined Tyson who had fired Rooney took a few unnecessary shots against Bruno but his power was enough to get the job done against a Bruno who was slow, defensively weak and weak stamina, not to mention mediocre chinned. An inspired Buster who had decent speed and stamina took advantage of the undisciplined Tyson a year later. Tucker fought a prime Tyson an acquitted himself well. Tucker was himself prime and while maybe not a "contemporary" of Tyson was not past his prime