When i look at all of the really good teams in the top divisons they always pass and barely run. Why is that?

Not just that, it's just that running the ball just doesn't work against a developed human defence. You can run it all day long and at best you'll average out to about 1 yard per carry or less.

In real football, the top teams are the ones that have qbs that can sling it and are unstoppable. Look at rodgers, brady, and manning. You can't stop those guys.