Dave, you make it sound that you are right, and you are not right, only half right. The difference comes in that we are listening to different types of music. I am not talking about 12 to 17 piece bands, or all types of music; example Latin and Disco music. Tempos can vary slightly, not 157 to 163, more like 157 t0 159, or 160.
This is one of the things that made my band successful. People would come up to dance a moderate 2step, or up-beat 4/4. Towards the end the tempo moved up gradually, and the band became stronger. People left the dance floor excited. There were times they walked out the door dancing. ----- We did our job well.
Now we are both right, and I feel better, John C.
PS,Backings will always use the same chord in the same place. They will also put excitement in the same place. Boring. But they do have their place. Amen!
Oooooo ... I can't say I agree with inconsistent tempos. As soon as they were good enough to use, I always said that EVERY drummer needed to own a drum machine. Invaluable training tool. I hope you don't think I am saying that a great player on an arranger is better than a great band. I'm not. My reference was to how the soloist plays when fronting a band, or playing over a track .... and just how the audience perceives the result. I'm glad we can both be right - makes for better conversations.