Party rake ridiculous

[Benman]

I've been playing on Poker Stars exclusively for the past 6 months. Recently I played some on Party to check it out. Bottom line, here's what Poker Tracker says the rake is for each site as a % of the total pot at the $.50/1.00 game:

Stars: 2.94%
Party: 4.64%

How can this be? This is a huge difference, that simply must swallow up any advantage that Party may offer in terms of easier games.

It boils down to the fact that Party now (I think this is recent) takes a whopping $.50 at $5.00, while Stars doesn't reach $.50 until $10.