I'm very happy to see the confirmation that my G15 has an amazing lens.
Here is a comparison of D5200, D5100, RX100, and G15 with delivered Lens of the kits.
OK, in the center D5200 is slightly better than the others, but as soon as you go to towards edge, surprizingly, the G15 is better by a fair amount
Add to this that G15 Lens is f1.8/f2.8 compared to f3.5/f5.6, you have to admit that the G15 is really underestimated.
So, yes, I'm happy.