...making 6 times as much as us cause they have higher likes.
Its all about perceptions.
Some of the more serious booking agents will come see your show but most don't care they look at your YouTube videos may listen to your reverb nation but always check your Facebook.
I don't know
I think a lot of this (not this post, but the general idea behind it) is missing the forest for the "like" trees.
As a promotional tool for people who haven't seen the band, I think you want to make people viewing your facebook page or an event invite say -
"That looks like a good time! I'd like to be a part of that!"
As a promotional tool to get people to return, I think you want to create a record that encourages them to say -
"That was a good time! I was/am part of it, and I want to continue to be and do it again
and I want to include more friends!"
This does not simply involve a number of likes, but number of likes is part of a whole that creates, results from, and supports that image that your band delivers a good time. Likes should also be part of the result of the band delivering a good time.
A page with likes and nothing else would be ineffective IMO. An eye-catching page with pictures and videos showing people having a good time, would have a level of its intended effect with or without a high number of likes. A high number of likes bolsters that image. It's a piece of a larger picture.