Thanks very much for all of the information. Was trying to understand codeshare earning rules and found exactly what I needed.

Looks like a new example is needed for post #4:

oneworld partner prefix, non-oneworld operated flight 

For example. a CX flight number on MH. You earn nothing. The rule is that both the flight number and the operating carrier have to be in oneworld to earn. Some have successfully had Avios and Tier Points awarded in this instance but that is the exception and very much not the rule.