Im not saying im underestimating the current generation but i dont really believe that Fury would able to beat up Tyson on his 80's? I can already foreshadow on what would happen.
Well, to be honest it's quite possible to be cool and composed and still be an absolute nightmare. So I don't even know if aggression matters that much. If anything, it could make boxers act reckless during their fights.
I'd still lean towards Mike Tyson against practically every heavyweight now though, not because he was aggressive, but because he was a straight up monster.
That's probably his skills (his power), but it didn't help him last in the sports with good record as time comes he was already losing.
His got Losses 6 in his entire boxing career but he is still entertaining compared to boxers who have no loses like Mayweather for instance so he is a legend but in terms of style, he is not as smart as the boxer I cited in my example but that's my point of view only.