It seems like your having a reading comprehnion problem.
Also... multiplications on a smaller level actually generally lead to more of a performance boost per amount added so...
And seems like you have a spelling problem. See, cheapshots won't get us anywhere
This amount of RAM has never been added to a successor console before and that's a FACT
NES to SNES seems like a big jump only because of how laughable NES hardware was, even for it's own time. It's not much of an achievement to make a big jump from that