I'm not that surprised that they beat Arsenal. I'll go as far as to say they are the favorites to qualify here.
That's the obvious fact here! I just don't know why people are somewhat blind to the reality simply because of Arsenal's "supposed" big team title. I'm not saying there is no possibility of Arsenal pulling a comeback, I'm rather not just convinced with performance so far in the competition, and I'd gladly take Rennes to qualify for any odd greater than 2.50.