United and Barcelona are the best 2 teams in Champions League play this season.
United still has some work left to do to be the best team in the Premier League over the course of the 38 week season.
I'm not sure you can say either team is the best in the world unless you specify the timeframe. 38 weeks is almost a year. Why not say 2 years? Why not 5? Why not 10? Or who is the best team at this exact moment? Who is the best team when healthy?
You act like his answer to those questions would differ.
Just in thinking about these questions led me to doing a little research. There are basically 7 teams that have been regulars in the Final 16 over the last 5-7 years -- Barca, United, Real Madrid, Inter, Chelsea, Arsenal and Bayern Munich.
So I looked at all of their CL knockout stage games against the other teams in the subgroup in the 16 team knockout stage era. I added Liverpool and Milan to the list because early in the decade they were as good as anyone, so I think that's a sufficiently strong side.
It sort of filters out some of the disadvantage of the draw...like say you draw the eventual champion in the round of 16, losing to them doesn't really mean you were only 16th best. You might have been second best, but thanks to the draw we'll never know.
Anyway, I thought it was interesting, maybe someone else will.
Barca -- Arse W, RM W, Arse W, Inter L, Bayern W, Chelsea W, Man U W, Man U L, Liverpool L, Chelsea W, Milan W, Arsenal W, Chelsea L -- 9-4
United -- Chelsea W, Milan W, Bayern L, Milan W, Arse W, Barca L, Barca W, Chelsea W, Milan L, Milan L -- 6-4
Real -- Barca L, Liverpool L, Bayern L, Arse L, Bayern L -- 0-5
Inter -- Bayern W, Chelsea W, Barca W, Bayern W, Man U L, Liverpool L, Milan L -- 4-3
Chelsea -- Man U L, Liverpool W, Barca L, Liverpool W, Man U L, Liverpool L, Barca L, Barca W, Bayern W, Liverpool L, Arsenal W -- 5-6
Arsenal -- Barca L, Barca L, Man U L, Milan W, Liverpool L, RM W, Barca L, Bayern L, Chelsea L -- 2-7
Bayern -- Inter L, Man U W, Inter L, Barca L, RM W, Milan L, Milan L, Arsenal W, Chelsea L, RM L -- 3-7
(Liverpool is 6-2 -- 4-0 against not Chelsea -- but hasn't been in the knockout stage often enough lately to merit consideration with this group; Milan is 5-4.)
Odd that almost all of United's games against the others are against Chelsea, Barca or Milan. Barca has wins over 6 of the 8, missing only Inter and Liverpool. They've played against all of them. Arsenal and Bayern have been plenty unlucky to face very strong sides in the early rounds, but Arse hasn't beaten one of this power 7 in 5 years either (they beat Milan 4 years ago). Inter has had tough draws in the first round the last two years too, but won both.