TL;DR
A stack of cut wood should be more energy dense than a stack of raw wood.What ?
"Raw Wood" (which would be more clear as "Timber") has 4MJ of energy and a stack size of 100, for 400MJ of energy per stack when used as fuel."Wood" (which would be more clear as "Lumber") has 2MJ of energy and a stack size of 50, for 100MJ of energy per stack when used as fuel.
That seems very backwards. I can stack lumber a lot more effectively than raw wood. I'm sure people would scream if you decreased the stack size for raw wood, so maybe increase the stack size for lumber? Lumber stacked to 200 would make them balanced.