Re: Are these the differences between this and the KoT Power Up
KoT has the Panda character and power up cards.
This expansion has all of the KoT power up cards as well as New York and the Shark instead.
Your post is a little garbled. So to clarify:
You say "This expansion", but posted in the KoTOKYO Power Up forum, so I have to assume that "This Expansion" means the NEW YORK Power Up.
The TOKYO Power Up content is for the TOKYO monsters to use in TOKYO (9 sets in 2nd). Although if you don't care about matching names, it can be for any monsters in TOKYO. (Note: you'll probably want to get 2nd edition if possible, it is strictly better than 1st)
The NEW YORK Power Up has two sets of Evolutions for the NEW York monsters, one set for use in TOKYO the other for use in NEW YORK (7 sets for each).
Again, if you don't care about matching names, you can use them with any monsters.
There is no duplicated content between the Power Ups, all Evolution sets are unique for their monster.