Octo-core power!!!

I find it very interesting that the octo-core did not show much if any improvment over the quadcore snapdragon version of the GS4. The battery life and use cases are virtually the same according to Engadget  The one area that it seems to help is the slight lag when scrolling through homescreens which makes me wonder if it was just a matter of Samsung optimizing the software a little more for their own chip over the Qualcomm version.