GasparZizou
Super Freak
That bothered me a bit as well, but like Parker, he was a giant fan of Cap. Lang, even in the comics, is easily impressionable and does things at the spur of the moment without thinking about the consequences too much. Imagine a living legend like Cap asks such a guy to help him. It ain't that weird for him to rush into a conclusion without thinking about the end results. It did bother me, but it's not a big plot hole IMO.
I just thought it was a dumb thing to do by Stark.
The rest is fine, Spidey was perfect and yeah, his banter with everybody including cap was fantastic, and like you said, it's not really tied to a plot point so it's fine.
Btw, is Cap that strong in the comics? I've read a couple Cap comics but I've never seen feats of strength like bringing down a chopper, kicking a truck, etc etc.