Although this is a very violent movie, I approved it for my 13 and 10 year old boys. Unlike most westerns, the main character was not out for revenge. He was obviously plotting two rival western gangs against each other to rid the town of them. A town whose innocent people had been tortured, murdered, and worse by these bullies. In this time and place in history there was no court or prison system; the only way to protect the innocent from evil-doers was to end the lives of the evil-doers. I believe "killing the bad guys" is only appropriate in a circumstance like this where victims can be protected in no other reasonable way. Also, unlike most westerns, there was a great respect for the personhood of women (and children and good men too). When the main character had the opportunity, he didn't even look at a vulnerable woman inappropriately, let alone lay a hand on her. Also, it shows another woman as valuable for being the person she is, as well as for her important roles as wife and mother in her family. The main character also protects a victim family with, potentially, his life, taking a severe beating and knowing he might die, but continues to keep the family protected. These things are very commendable as far as I'm concerned.
There are some drawbacks, and it did take some conversation between my husband and I to determine if our boys could watch this. There is a little revenge at one point when he prolongs the death of a bad guy a little, but it's not as obvious of revenge again as in most westerns. The women's clothing is certainly low-cut, although I don't think they come across as provocative, but rather the style of the day. There is a LOT of mindless killing, although by the bad guys in order to show just how ruthless they are. There IS blood, despite what the Common Sense review says, though not much and it looks more like paint, and the "murderous suitor" DOES "lay and hand on her" - he kisses the captured woman. And it may be of concern to some parents that there is continuous smoking and a lot of drinking.
Overall, I'm glad I previewed this. I had said "no" upon reading the Common Sense review, but decided to preview myself after the heartfelt pleading of my older son. :)