Coinchoose is a great site but their data is sometimes inaccurate especially when the hashrate is defined as "? ? ?".
I used to mine Emerald and the difficulty was stuck on 0.21 on the site making it the most profitabler coin when it was not.
I started using coinwarz they have warnings if the data can be inaccurate.
Hope coinchoose fixes it someday.
P.S. Bumping your thread three times in one day