If what you say is accurate...they shouldn't love the Big O these days. In the 80's, the Big O didn't have a roof on it, so it might have been OK. The sonics are so bad now at the Olympic Stadium that you can't even understand what's being said over a PA system. The sound at Popmart was horrendous, whereas the sound at 360 (outside) was fantastic, and the sound at the Bell Centre is passable.
The Big O's sound is crap, there is no denying that, and the Bell Centre is actually very good for the type of show they have been doing since Popmart. I realized after creating this post that the