A little bit of wiki-digging reveals that it is in fact Gold Rush, but I wouldn't say it "looks like" Goldrush at all - none of the map's playable area is visible in the shot, and you'd need a fair bit of prior knowledge to know where exactly this is.
How To Know That This Is Gold Rush
This image is specifically a copy of a shot in Meet The Sniper that occurs about 51 seconds into the video ("I think his mate saw me... yes, yes he did!"). Immediately before that shot in the original video, you see The Sniper climbing a tower, which is where he's sniping from in the shot taken (identifiable by the railing seen in the bottom of the shot). That tower appears as part of the scenery on Gold Rush's third stage, but is outside the play area and can't be accessed during regular gameplay.