How much easier are Party 10 and 20 SNGs than Stars?

[texasrattlers]

I am currently playing the $10 Stars SNGs, hoping to move up to the 20s if I can improve my game from participating in this forum. I have played a few SNGs at Party, but I think the Stars interface and support are SO MUCH better than Party that I prefer playing at Stars. So, I am wondering, are the Stars SNGs really THAT much more difficult at these levels? Any quantifiable results from players who have played both?