You're just comparing different styles then, Tarantino's style has always been over the top, I don't think you could say his movies would have definitely been better had he used a more muted tone in terms of violence. I'd say in terms of money made, critical success and awards nominated his movies have been far from ruined, and I'm not even really a Tarantino fan, I saw Basterds and really enjoyed it, and have seen RD once, I'd really like to see Django too.
That's cool, I just disagree. I think he tears down what he so carefully built up just for shock value.