Ret is not fine on Beta. It's a pruned / watered down version of Legion which is not interesting or fun. Numbers on Beta and duels mean nothing. It's about engagement and the core of the spec and on beta it is lacking in many areas. Mobility, Rotation Downtime, removal of a significant number of traits / passives, many talent tree tiers need changes.
No one should be alright with a worse version of Legion. As a Retribution main since early TBC, it's sad playing BFA Beta.
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Agreed. I don't think some people even play Ret seriously that are saying it's good on Beta (much less, "better than Legion"...)