Well, the last shootout I took part in didn't have so much echo.................but then again Mile End may have different acoustic characteristics compared with downtown Los Angeles
Seriously - perhaps it's just that I've grown accustomed to the "pteeow" of a movie bullet and this has been deliberately made with lots of echo - maybe this is simply too realistic for me or perhaps I have played the lobby scene from The Matrix too many times!
Having said that I prefer the R2 Japanese release of this particular shootout compared to the R1 version, which lacks a bit of all round "dynamism" by comparison.
Mark