Old buildings do tend to have better acoustics than newer ones IMO, but I believe it is just a money / cosmetic thing as to what the surfaces were/are ... and possibly some competitive "keeping up with the Jones's. In all, good acoustics is just coincidental and standing on stage using amplification, I don't believe lends itself to true evaluation. Yes, I like a high vaulted ceiling as I find in many church sanctuaries, but I can discern a difference between rehearsal when the seating is empty to that when the congregation is present, and the same holds true in clubs as to the number of persons in the audience and what they are doing, down to the ware of what they are drinking or eating and the clothing they are wearing. What a hodgepodge? Add to this the enviromental temperature and barometric pressure as factors. Geez, you don't have to be an expert or analyse ... you just like it or you don't.