When a flexi line pilot can earn more for the same number of hours as a full time pilot, it doesn't meet my definition of B scale.
Can they always work the same number of hours? Are there occasions when they'll do less hours than a full time pilot? Was that condition changed specifically for new hires?
Looks like, sounds like, walks like.....
Don't get me wrong, I'm not adverse to grand father clauses and trying to tidy up past mistakes. Sometimes that means new hires end up slightly different conditions for a short time. However at least be honest about what it is in the short term. Trying to deny it smacks of heads in sand.