Yeah. And then Steve just wanted to pound the fuck out of the guy was great. He was all "Please put on the suit. Please. I wish you would put on the suit, Tony."
Yeah, Rogers is confident (cocky?) as hell, and has never backed down from a fight above his weight class. Part of what makes the character appealing.
I still don't quite get what Loki was aiming to accomplish by getting himself captured.
This one is a bit more subtle. Loki NEEDS the invasion to work, or he's in for a world of pain at the very least if he doesn't deliver the cube to the Chitauri/Thanos. The Avengers are standing in the way of that succeeding.
He needs them out of the way not only so the invasion has no resistance, but also because he needs to use Stark Tower to set up the portal.
Loki is more or less on his own, and CAN'T stop them with brute force, so gets himself captured. It's established (in Thor, i think?) that he does have the ability to manipulate human behavior to an extent, and his plan is to:
1.) manipulate banner into losing it, turning into the hulk and taking out Thor/Iron man
2.) use hawkeye and his team to knock out the helicarrier and mop up everyone else.
between 1 and 2, the avengers will be in no shape to work as a unit and stop the invasion.