This is based on champs performance and matches, SEN never played G2 in champs.
EDG is probably on the same level as G2 and SEN, they almost beat G2.
SEN lost one game in playoffs, they played fan favorites in lowers and beat them 2-0, one match doesn't mean they are terrible.
G2 had TWO chances to prove they aren't bad but both games proved they are BAD, one close map and one map where they got dominated.
Maybe EDG's ranking is a little low, maybe infront of FNATIC or SEN, but I think it's fair unless they beat LEV.