I don't think Wang and Wang are coming back to competitions. Isn't she still recovering from injury? And his technical skills were never going to be sufficient to take them anywhere. The Chinese federation needs 3 competitive teams to go to the Olympics and Worlds and look good. That's why I think they're in the delicate position of wanting Peng/Jin to "do well, but not too well." (But then ice is slippery, so the outcome can never be fully controlled.) Besides, I would imagine they don't want any more bad publicity coming out of either Peng or Jin.
So far, Peng/Jin have worked as hard as they can to make the best of the opportunities they are given. I too think they are not likely to beat Yu/Zhang in any domestic competition. The day when they skate as well as or better than Y/Z and get placed accordingly, I will gladly accept I'm wrong and eat my keyboard.
International judges, generally not beholden to the Chinese federation (although I cannot prove that either), will score them more fairly than domestic judges, but domestic ranking does have an impact on how international judges view top-tier skaters.