Thats not a street fight, its an arranged match (1 on 1, no need to worry about a second opponent flanking, etc)
He knows whats coming (punches only, can bob and weave without worry of opponent throwing a knee or going for a takedown, etc)
Fighting in a wide space (easy to move, circle, can just focus on whats in front rather than whether he is going to trip over something, etc)
His opponent is trying to "hit" him over 30-45s, whereas a real attacker will be trying to "kill" you and it will be over in <5s most of the time (different intensity, etc)
Who attacks you with boxing gloves on? (limits strikes to boxing punches, so he doesn't have to worry about getting a finger in the eye, etc)
You can only tell if it would work for a real street fight if you fixed the problems above; otherwise its just a nice demonstartion of someone trying to apply a sport concept to real combat and introducing a bunch of conditions so it works.