I think you just answered it with the opening sentence. Because it pulls people in. It's the company that made pro wrestling as big as it is today and there aren't many people who started watching wrestling by not watching WWE first. I doubt that people who watch multiple wrestling promotions would still consider WWE to be the best as far as quality goes, but you also gotta think about all the people who only watch WWE and can't compare it to anything else in the first place. After all, the E's just more popular and brings in more viewers on a weekly basis than anyone else right now.Don't get me wrong, I love the WWE and wouldn't be a fan of wrestling were it not for the WWE
But ye, like people already mentioned, it just comes down to personal preference on what you think is the best