When I referred to street action, I was focusing on mixed martial artists who compete for a living. The likes of Conor McGregor, Urquidez, Silva, St. Pierre etc. etc. With boxers, I think it depends on the individual and what they're facing. I've seen boxers clean house on the street but, like you, I've also seen them get exposed because they only have two weapons.
With regards to taking a direct hit, we don't know. But, I spoke to Sugar Ray Leonard about this and he said you have to almost train your body to take punishment. When you stop fighting, you automatically lose the ability to endure. Lee trained like a demon but he wasn't really accustomed to absorbing blows. That was my point.