There are better ways to skin the cat, than breaking your hands on that first guy, because, now, his buddy sees you holding your hand. Tyson broke his hand, in his last famous street fight; so, it would follow he isn't a smart street fighter.
Well Tyson punches like a tank. The average person won't be able to punch that hard or hard enough to break their hand in a few punches like he did. But he also has another hand to kill you with. Tyson didn't fight some non-Fighter Martial Artist in the streets, he fought a Pro Boxer with like 15 wins by KO. So Mitch Greene, ain't no average guy in the street and that's probably why Tyson went in full power like that. Some non-fighter, Tyson wouldn't need to use that much power.
And to your comment about Tyson not being a "smart street fighter", well Tyson was a Juvenile Delinquent with THIRTY EIGHT ARRESTS by the age of 13, mostly for "petty crimes & fighting". He was in and out of Juvie, which some speculates that he's been through all the brutality, violence, including getting raped and raping of others, associated with Juvie Detention Centers. And outside of Juvie, he lived in the tough ghetto streets of NYC. So I doubt that what you said about Tyson is even remotely true. He's shown his animalistic side plenty of times during his interviews and proved it wasn't all a show when he not only bit Holyfield once, but twice, taking off a chunk of his ear. If anything, Tyson is this exact, bad to the bone, streetfighter/killer who most SD gyms romanticizes about when they do their training, but more so, Tyson became a highly trained, weapon/killer and the best in the world at it.
Lastly, when it comes to being conscious of breaking one's hands, real fighters are always weary of it. Even fighting just amateur MMA, I know the limitations of my hands (and other limbs) to a high degree. With 16oz gloves, we can go up to full power on each other and the bag during training, but even with 7oz MMA sparring gloves, we are very careful to not injure our hands nor break noses, etc. There's no way that Tyson is a dummy about this. But a broken hand wouldn't stop a Fighter, let alone the best Boxer of the world. An MMA fighter would still have the other hand, kicks, knees, elbows, headbutt, etc. And you can still punch with a broken hand, depending on the severity. Tyson certainly can still elbow, bite and even knee & kick. But his other good hand alone can easily kill the some non-Fighter/average Martial Artist, if he wanted to.