I have never stayed at a R&C property which was remotely like an Amanresort. The closest was perhaps Le Prince Maurice on Mauritius.

Amanresorts are a single chain, with an overriding ethos which involves service and design. R&C is essentially a consortium, a marketing device, to which hundreds of individually-owned and vastly different properties pay a large annual fee. Consequently, R&C properties are inconsistent - some can be excellent and full of character while others have been fast asleep for decades. I don't think there is much quality control within R&C - so standards vary a lot. That may well happen with Amanresorts.