You know ive seen ppl assert that Mabel and Ford are “the selfish twins” or at least share selfishness as a character flaw, but that makes no sense to me.  Stan and Dipper have just as much capacity to be selfish as Mabel and Ford, they just have different priorities and personalities than Dipper and Stan and their flaws are expressed differently. 

Like Mabel is excitable, she’ll spontaneously get very emotionally invested in something or someone and tends to sweep other people into whatever thing she’s doing; Dipper tends to obsess over things for a long time and go to extraordinary lengths to accomplish his goals, sometimes jeopardizing more important things because he can’t see the big picture.  Neither of those ways of being is worse or better than the other, that’s just the way they are. 

And like I’ve seen people accuse Ford of being proud, stubborn, standoffish, not thinking of people’s feelings, obsessing over goals when it puts other people at risk, and none of those things are untrue, but…Stan literally has all those flaws in exactly the same amount as Ford does.  I’ve seen people argue as well that Stan values his family more than Ford, but I don’t think that’s the problem at all; Ford doesn’t know how to work out interpersonal relationships as well as Stan does or in the way Stan does, but that doesn’t mean he wasn’t thinking of keeping his family safe when he was making plans to stop Bill. 

Stan and Ford are just like Dipper and Mabel, two sides of the same coin.  Both sets of twins may have different priorities but they value many of the same things and have many of the same flaws, they just express it in different ways.