It's not the same thing. OT works by having a discrete set of operations that are known to the system so that they can be reordered properly server-side.

Reflect is based on Server Reconciliation: https://www.gabrielgambetta.com/client-side-prediction-serve....

The critical difference is that Reflect doesn't need to know the operations up front. That is what allows developers to provide their own operations, or as we call them "mutators".