As it should be, people are free to like what they like.  When fans attack other people over taste it just makes more people ignore them.  Too much haterade out there.

Oh yeah?  Prove it.

Yeah, you can't when the value of a game is an opinion.  BTW, my dad can beat up your dad.

This in itself makes perfect sense to me, pal.

Were you the one who thinks that a game is better just because it sells more than another?

In a world where you can't possibly play every game there has to be a way for them to be compared. Sales are a good of a reason as any. Obviously poorly made games will fail to do Halo, CoD, or GT numbers. Games that are really good will sell a lot through word of mouth advertising.

I'm not saying that it's one of the best ways to judge quality, but obviously if the game isn't good it won't reach those huge numbers.

Dude, that is so wrong.

See that not really true either, if a game is from a popular franchise it will sell alot often dispite the quality, the initial sales especially have the least to do with quality since no1 knows if the game is good or not, movie games especially but even if it's a sequel to a popular game or carries the same name FFXIII is a good example of that 

How so?  Specific examples please. kthxbai

I've heard FFXIII is a good game just a bad FF. And if you were to compare the sales of the PS3 version to past games in the series you can actually the sales reflecting what I said

the gameplay isn't good, it's just flashy and the graphics are of course amazing but the game isn't good mediocre maybe, and it might have sold less then those but it still sold more then demon's souls and Ressonance of fate and Valkyria chornicles and pretty much everything this gen that's not a shooter or racing sim 

It is to the majority of people.  Might not to everyone, but games with wide appeal are usually doing something right.

A game's value is individually subjective, but to devs and publishers they usually quantify "better" by sales, since it's the most meaningful feedback as to the value people find in their work.  So if you wanted to define "better" as in wide ranging appeal, games can be ranked - and it usually correlates with sales.

In summary - "better", "worse", and "quality" is opinion, but sales data is objective and you can use that to infer wide ranging appeal, which is arguably more important to devs than maximizing metacritic scores.