I guess you have no way of knowing how far off the mark that statement is

Weeeeeeeeeeeeeeell - it rather depends on whether you are inside the genre or outside. If you were an aficionado overdosing on the product, any small difference would burn ya sensibilities. That habituation word again.

If you are on the outside, broad brush stroke approach is more than sufficient, thankyou very much. Clue's in the names - Cola. They want you to think there is commonality.