It's gotta be Chelsea. They are playing outstanding soccer right now and their defense is superior.
I strongly disagree.
Well, I'm a huge Man Utd fan as well, so
I guess I'm a bit biased, but anyway...
United were actually
better than CFC in
the Premiership, offensively AND defensively.
United scored 80 goals and conceded just 22
while Chelsea scored 65 goals and conceded 26.
So superior is not the right word, IMO.