Originally Posted by Silvermoon
Even excluding the deleted scenes we know Cap is being briefed with visual footage on the way to the helicarrier, when he's on the Quinjet with Coulson we see him looking at footage of Banner as Hulk (that looks like the same footage that Stark got as part of his info packet), to me it seems logical that Cap also would've been shown the Thor & Destroyer footage (that Stark had on one of his projected screens) from New Mexico and he also probably had footage of Stark/Iron Man as well (whereas Stark had Cap footage on his).
Hope that made sense.
After capturing Loki, Cap even remarks to Iron Man "that guy is a friendly?" when Thor shows up to snag his brother. So obviously Cap had previous knowledge of Thor.
Then there was also the "I've seen the footage" line he gave Stark on the hellicarrier as they were ready to throw down.