Wasn't Scotty 2nd Officer, 3rd in Command?
Sorry, I meant 2nd officer. He had to do double duty sometimes and command the Enterprise , while La forge had it pretty comfortable just commanding Engineering.
Still I was surprised Obrien ranked 2nd while La forge got third place, since TNG is often seen as being more mainstream than DS9.
Laforge was one of my favorites, but Scotty wrote the book, plain and simple.