Everyone had witnessed Chen Changsheng's attack power. Even bodies of steel were no more than toys he could casually chop apart. The prototype of Blackout was an attack helicopter, and he was the one who had taken out the US Military's air base in Qatar.
However, Blackout's overwhelming attack power made him more suited to being an assassin. Taking on an unprepared US Military air base was one thing, but directly facing an opponent as powerful as Chen Changsheng was another. Starscream was somewhat uneasy about that. Therefore, with the Decepticons' strongest warrior refusing to act and their assassin unsuited for the job, Brawl had no choice but to step forward.
Brawl's prototype was an M1 Abrams Tank, complete with a firepower buff. Anyone who saw the cannon barrel he carried would know that he was a fire-support specialist. Of course, as a main battle tank, he possessed armor far thicker than Bonecrusher, Barricade, and even Bumblebee. That was why he dared to step forward despite Chen Changsheng's overwhelming attack power. He was confident that Chen Changsheng would be unable to break through his defenses.
As soon as Brawl stepped out, Starscream and Blackout unconsciously retreated a few steps. Clearly, they knew the caliber of Brawl's cannon all too well.
"I apologize for my rudeness just now. Clearly, you're a warrior worthy of respect. However, defeating Bonecrusher is nothing to be proud of, because everyone here could do it. So, are you ready to face Brawl's challenge?" Aside from the mockery directed at Chen Changsheng earlier, Brawl was indeed much more polite than Bonecrusher.
Chen Changsheng naturally treated polite people with courtesy. He waved lightly, like an English gentleman, and said, "I'm ready. Let's begin, Mr. Brawl."
"Tremble before my firepower, human! Brawl will be the one who kills you.