You have to be a really special team to go b2b in today's era. The margins between winning and losing are so tight, that some little things can make all the difference in whether you can repeat.
Little things like motivation. I'm sure the kings are motivated to win it again, but teams that didn't taste it last year should have that little bit of extra desire, and that's the kind of small thing that can make all the difference these days, with the tight margins.
I highly doubt the kings will repeat... I know, I'm really reaching for branches here
