Jeremy was not trying to boast when he said that. He knew his own ability.
He did not deny that Carter's bodyguards must also be of some skill, but he was more convinced that none of these people were a match for him.
Upon hearing what Jeremy said, the bodyguards felt extremely insulted.
Did he want them to fight him all at once?
He was clearly looking down on them!
They wanted to see how strong the young master of Glendale’s most powerful family was to be able to say speak so shamelessly.