Yes, I use the pool hash rate for the block (although for Kano it is estimated until someone uploads their rewards which most people are not doing - I did that this morning). Also a key point of interest is that with the 400Ph rate, the 5nd ramp up time is WAYYY less than at 45Ph (around 5 days versus a month). I had added 2 miners that were slowly building but they are pretty much fully there now! Interestingly, the last 3 blocks in one 24 hour period were about the same as all of last month!
It would be nice if the "big guys" understood this and stayed put, instead of foolishly losing money "grasshopping" pools or "gambling" luck...
And your site clearly demonstrates here they would earn more in the long run.