I see very little point in using either. I basically use JSON based RPC for web type client and binary based RPC for native clients in my servers. My servers

I see very little point in using either. I basically use JSON based RPC for web type client and binary based RPC for native clients in my servers. My servers mostly expose higher lever functionality (for example calculateSalesDistribution with parameters and return structure). I see no use in mental contortions required to map it to anything resembling GraphQL or SQL or WhateverQL. Works for more standard business like APIs just as well.