Before I start my question I want to point out that it's not similar this question. Difference between writing platform specific code vs dart:ffi code. Here the questioner is asking the actual difference whereas I am trying to know the difference for the same task that can be achieved using both methods.
What's the difference in running native c/c++ code on the platform, getting the outcome on platform side(let's say Kotlin for instance) and sending it to dart via method channel versus writing the dart:ffi interface and directly calling the native c++ code. They basically will provide the same code execution. The only difference I see is that the MethodChannel call would be an async task vs dart:ffi which will be synchronous. Apart from the async behavior, will there be any difference(performance primarily) in getting the response from either of the technique.