Dortmund and Aston Villa are two underdogs since Champions League quarter finals but I am very surprised to see that Arsenal have better odds than Inter Milan. Recent seasons, Inter Milan played better and more impressive than Arsenal in Champions League, and logically they deserve to be given a better odds than Arsenal. Arsenal are not a small or weak club but they lack of champion mentality for many years and frankly they'are not comparable with Inter Milan in Champions League recent seasons.
In the last season, Inter not qualified to round of 16, while Arsenal stopped in semi final.
In the last two season, Inter reached to final, but it was because they were in weak group, they met Porto, Benfica and Milan.
But, I consider Inter is better than Arsenal because Arsenal performance aren't that great and they never won Champions League.
Thinking Arsenal will beat Real Madrid is already impossible in the first place.