Does Page Strength Matter?

I've been tooling around with the Page Strength tool at seomoz.org. I've seen some interesting results. A few people who are clearly (because I know them) making money in their area have recieved a low Page Strength rating on the tool. I found that rather interesting.

I think what matters isn't the Page Strength but what SEO is adding to the overall marketing efforts. In some cases, the overall Page Strength doesn't seem to matter. What matters is the results from each business's little niche market and how a company fits into that niche market.

I've seen 2 sites that are doing well for their companies but they had less than 3 on the Page Strength meter. I wonder why that is? Is the tool flawed? I don't think it's flawed. I think it's taking too much into consideration. I think if the tool narrowed in comparison to others in a niche market, you'd get a better idea of where a company stands in relationship to the niche market.

The comments on the left side do make a difference. Clearly, the comments recognize the fact that some progress is being made in certain cases. I think as a whole, the tool is a good one for guidance but not the wole picture.