I have no idea what you're trying to say there about it being a validation test - opus 5 and opus 5.5 are in different universes of ability - if you substituted 5 for 5.5 to validate your system and couldn't tell the difference - your validation failed. Opus 5.5 is replacing a ton of _fable_ usage - if nerfing is real and was of that magnitude there would be no controversy about whether or not it's happening it would be the most obvious thing in the universe