Volosozhar would have won a world medal long ago with a partner that matched her skills. Her partner could not land the jumps. That's not a 'great' pair.
Mukhartova-Trankov were OK, but I did not see them as developing into a 'great' pair. Both had talent though.
So the pairing of Volosozhar-Trankov was a good move, but I would have liked to see Mukhartova in the pairs field too. I liked her practice clips with Blanchard and felt they made a much better pair than M&T. Too bad it did not work out for her (and Jerome).