you rely on statistics to tell you what is the best/worst? If you do then you must agree that when someone says Nirvana was the greatest band to walk the earth, all because they sold more albums than michael jackson in the 90's.
Its just your opinion, dont bring up ****ty statistics to try and prove your point. That's like saying if the majority agrees, its right. hence, if the majority likes britney spears over guns n roses, spears MUST be a better musician.