loss of control premium: minority holder disc

Given the nature that China drives very hard deals, often takes and sparsely gives... will there be a steep discount applied to AED from losing decision making capabilities and being a passenger instead of the driver? Moreso, what magnitude of a discount for having Sinopec of all oil majors as the controlling partner calling the shots?

I gather that the all the imdediate $$$ look good short term... But from a long term business viewpoint, and a possible long term shareholder, I really don't know.

Can anyone with significant north east asian business experience comment?