Poolpicker, btw, is also rather pure shit... they get their values from the website's themselves, not from actual realized profitability. So if a pool inflates their display numbers (I've never earned near what the coinking front page says their daily average is), poolpicker reports inflated info.
Also, MP doesn't auto-exchange, so I'm not exactly sure how their numbers work out, but I'm going to guess they base their profitability numbers on what the coins were worth when they mined them, not what they're worth by the time they're matured and sellable (which would affect the numbers).
Looking at poolpicker though, there's absolutely no way they're getting the numbers they claim to be getting for X11. They only support two coins from what I can see (Crypt/Dark), and neither of those has been remotely that profitable over the last few days.