Help the Newbies, Nut vs Pea Heat Output ?

I just saw another newbie with the same question as I have had for some time and decided to pose the question this way.

Let's say you have a given handfed stove, if you run nut at a pretty wide draft opening and that heat output represents 100%, what % of that heat will be created by just running pea at a pretty much related draft opening?

Understand there are a lot of variables here...just looking for some rough gut %'s.

Thanks