I tried one of Irving Crane's Balabushka (original) cues at a table. It played very neutral and felt stiff even after all these years. Crane called it his "magic wand" because he said he could not miss with it. For me in these years, it seemed a lot less helpful in putting English on a ball then a modern cue. Back in the day, they called it having a spine - a stiffer hit. It made it more important to stroke the ball well and know what you are doing. That is possibly why some may have considered these gems less then they are. However, it did what you told it to do, right or wrong and that means control at the table.
They did not amplify the hit so you could get to know what to expect each time. My Burton Spain cue is similar in that respect.