Certainly a WTA win in Ghost rating is better than two two-way draws, but that is the same as in points (by a bet's-worth)
Cgwhite is mistaken about the Ghost-rating system, it follows the same payout systems as points, but moves the break even point around for the different players (so a better player needs to do better to break even), and it defines the pot rather than letting one game be more important than any other. What Ghost-rating does do better than points is that it rewards you for playing well, and not for getting lucky with your opponents, and then the PPSC/WTA debate does remain.
Although, ghost-rating does actually emphasise the value of winning, because you don't pay the pot, and then receive points, it all happens at once, so you notice that the Profit in a solo is more than twice the profit in a two-way, but that was just as true in the points (just you didn't really notice because it didn't all happen at once).