I like how the Brit guy is just pretty please he got to fire it, and left it at that, while the Yanks all got a bit 'Texan Cowboy' about the whole affair, hehe.
Actually, I think the film is trying to explain that the brit's impression of a good hit, is hitting something from like 2-3km away (or further) where as the american's impression is to shoot straight at something 100-200 metres away.
The Brit video was just a test firing at an ordnance range, the American video was from an actual combat shot in Iraq.
Plus, which is more impressive, a big explosion in your face or a small explosion you have to squint to see?