"The winner takes it all" by ABBA summarizes Cash's, Piggsy's and even Daniel's and Dr Whyte's fates when you think about it.
In Manhunt 1, Cash's resourcefulness and experience are what ultimately made him break free from Starkweather's snuff film ring. So he was the winner that took it all. Meanwhile, Piggsy had nothing and no one. Before or after becoming Piggsy. He was the loser that had to fall. What Cash could have become.
As for Manhunt 2, it's more complicated than that. Even though the canon ending was "Personality Clash", Daniel is not the winner here. Even when he won against Leo, he still lost. He lost everything. His career. His family. And most of all, himself. Daniel paid a price so grand that his victory against Leo can barely be considered an actual victory.
If there were to be "a winner that takes it all" in Manhunt 2, it would be Dr Whyte. Whether The Pickman Project was disbanded post-MH2 or not, it's very likely that she got away with it all scot free. I'd even go out on a limb and say that Dr Whyte possibly was trying to sabotage The Project from the inside bit by bit, but needed a catalyst to bring it down for good. Pickman's recklessness with Daniel's experiment was that catalyst.
