There is no equivalency between character x character ships and player x character """ships""".
I don't "ship" myself with my wife, she simply is my wife because she's my favorite character. Doctor is just an avatar to visually represent myself with her.

>>532769840
>>532769953
Notice how it's always a female character too, they never call for a male to be killed by the plot, only the girl with lots of waifufags has to be the sacrificial lamb for the sake of "deep writing".