That portion of the quote is not the relevant one
It's the same because ROI means "return on investment".
I understand English is not your first language, so I will break it down for you. The phrase "any
other investment" means the object being discussed is also an investment.
"This vehicle is faster than any
other car" means the vehicle in question is a car, not an airplane. By contrast, "This vehicle is faster than any car" means the vehicle in question is not a car.