There's a secret smile Bruce has right now, one reserved for when Ross loses. Adrian might not realize it, but by admitting to that, he may have put himself on the Hulk's favorite people list. Or at least tolerable people.
One thing Bruce has learned is never to underestimate the stupidity of the army. Or just people with large weapons in general.
"I don't know, some people can be pretty stupid when they want to be." He finishes and gives Adrian a piece of gauze in his elbow, bending it to hold it there. He then starts preparing a slide so he can look at Adrian's blood under a microscope.