It shows that we were way ahead last week, compared to the previous week, but at about the same level this week compared to last week.
It also shows the interesting effect of variance, when comparing this weeks increase in total mining rewards with last week's. We can see it went faster last week for a period (the red line rises faster than the blue line), but that current week's mined BTC caught up with it along the way, which it should if we're mining at the same speed. In fact, if we're mining at the same speed, the lines might divert for a bit, but should always converge at some point, which is what we're seeing.
Good call about adding this chart! It's very useful for investors who'd like to know how we're doing compared to last week.
This is pretty much exactly what I wanted. I don't know if it is possible to add a drop down or some such thing to be able to move the "history" graph so you can compare week X to current week, instead of just the last week. Or maybe just have two charts.... one for "Best week" and one for "Last week" since those would be the two most interesting data points.
Either way, you have done amazing, and I found some bitcoin laying around so enjoy the donation! Also... you changed the link text of your donation link, but not the actual link... so in my QT client I sent the donation to your old address and not your new armory one because I was too lazy to copy paste.