That would leave Ford hanging as the other 2 big ones switched out....More fodder in the class action lawsuit proving Ford is burying their heads in the sand ignoring the obvious.
Eh, not quite that simple. Ford can easily argue that their engine and fuel rail design allows/requires they run the CP4 due to bla bla bla. What GM/RAM do on their trucks has 0 bearing on what Ford does with it's truck. GM changed fuel rail/pump suppliers with their change to the L5P engine, so again that is a relatively easy position to defend as they can argue they changed fuel pump due to a new supplier and a new engine design.
RAM on the other hand doesn't have either argue. If they would have stuck with the CP4 they could have at least made the argument that they did not feel the failure rate of the pump rose to the level of a recall and they were making updates to further improve. With them reverting back to the CP3 while on the same engine, after only 2 model years is where it gets them.
So to close, while I don't doubt the Ford CP4 has failures it
doesn't seem to be near the same rate from casual observation. Given that Ford sells a lot more trucks I'd expect to see more posts about the topic but I see fewer. There could be many reasons for this including that RAM guys are working their trucks harder, they are more inclined to pay attention to the engine, etc. and until FCA and Ford release failure numbers (won't happen without a court order) we will never know. I do know that just because other manufactures switched away from that pump doesn't really hurt Ford though.