The kernel isn't the only cost to power... Display and misbehaving apps can cost far more battery power than a poorly coded kernel.
Using the tweaks from here that are appropriate for you can offer good battery savings even on stock kernels.
What launcher bro?
As far as I can see, there is nothing related to launcher in his screenshots, just icon and widget choice (which are good BTW :thumbup: ).
You can reproduce this with any launcher :D