I believe it is the opposite... equal is not talked that all... if there is differences the thread get high actives. So nowhere people are bored of these discussion... they want more.Maybe people are just bored of these discussions that lead nowhere? And don't really care about this as much as you do.
If the next comparison have a another differences the thread will have high activity.
IMO when everything is equal there is nothing to discuss and it indeed become boring.