I read this on Moddb, and for those looking to poke at idtech please don't do this, this is the opposite of what you should do.
idTech 4 does better with large lights, less lights. But it's not related to how you size lights. So, tools need to be fluent, not rigid.
If you use larger but fewer lights your scene does 2 things, it looks bland due to using fewer lights and you are wasting performance because your big lights are touching more surfaces than they need to.
Smaller lights are better as you can use more of them, and because they are smaller they touch less polys = less draw calls.