Web controls or sub layouts

We have a client whose current Sitecore implementation includes a lot of sub layouts and no web controls / renderings. At first I thought that was silly because compiled code would be faster than partially compiled code. To get to the bottom of this, I took a simple web control from a previous implementation and made a sub layout out of it, placed both of them in a place holder and used Sitecore Debug to get the rendering times. Consistently the sub layout is getting .04 ms and the web control is getting anywhere from 5 - .5 ms. Now I'm intrigued.

I'm not too sure what to make of this. We are in the early stages of our next implementation and could go with the new way of creating controls or use our traditional approach.