Again, this is a ****ing stupid argument.
Sage Mode is a state of being, not a jutsu itself. The MS and EMS grant JUTSU, but is not a state of being more than the ability to use new jutsu.
ALL SAGE MODE DOES IS AMPLIFY ABILITIES YOU ALREADY HAVE. There is no "equal" to it and MS.
Meaning that if Sasuke knew how to use Sage Mode, his Amaterasu would be more powerful IN Sage Mode than WITHOUT it. Sage Mode granted Naruto a few abilities that aren't normal, such as enhanced perception (something that the Sharingan has), the ability to sense chakra (which in a fight isn't a killer technique) and Frog-fu which isn't a technique on the scale of Amaterasu. It's the jutsu that he already has, along with a strength and speed increase receiving a boost that makes Sage Mode so great. Naruto was low-jonin level without Sage Mode, and with it, he became what is known as "Kage" material. All it did was amplify what he could do.
It's not a hard concept to wrap your head around. Sharingan is an exclusive ability used by only a select few people, whereas Sage Mode can be used by anyone with a large chakra reserve (with Dragon Sage Mode needing a particular body). This means that even Kakashi could learn Sage Mode if he gained a larger chakra reserve.