Why does Johnny describe Dally as gallant?

From the text:

"I bet they were cool ol' guys," he said, his eyes glowing, after I had read the part about them riding into sure death because they were gallant. "They remind me of Dally."

"Dally?" I said, startled. "Shoot, he ain't got any more manners than I do. And you saw how he treated those girls the other night. Soda's more like them Southern boys."

"Yeah... in the manners bit, and the charm, too, I guess," Johnny said slowly, "but one night I saw Dally gettin' picked up by the fuzz, and he kept real cool and calm the whole time. They was gettin' him for breakin' out the windows in the school building, and it was Two-Bit who did that. And Dally knew it. But he just took the sentence without battin' an eye or even denyin' it. That's gallant."

Thx for wasting your time to help some random person you dont even know just to help them on work

Much appreciated