Quote:
1 -What is moer important to take into account : average optimization rate or per keyword optimization ?

Well, the optimization rate for your main keyword would matter most
Quote:
My question is : why the keyword optimization rate shows 85% in my page analysis but shows a lot lesser in competitor's site at 24%--that's a big difference.

If your competitors' site is #3 then it means that it is compared to sites number 1-11 (the site itself gets omitted). So basically when a site is compared to sites ranking lower and probably optimized worse it naturally will get a low score itself - simply because WebSite Auditor is relying on relative analysis.
Quote:
This scenario means I have to analyze my competitor's pages as well to get a clearer picture to optimize my page? That would mean putting more time to work on that.

Although it is useful to pay attention to the percentage and score in your project reports, you should analyze your competitors' page elements. Very often it makes sense to find a competitor website whose content has the highest keyword density and to try to keep to the proportions used in its page elements.
If you are interested to read discussions of similar concerns, please check out the following topics of our SEO forum:
when-100-may-not-be-the-objective-t1509.htmlhigher-optimization-rate-better-ranked-t1693.htmlIf you need help optimizing a particular page element, please let us know and we will do our best to help your out.
Quote:
3-- I read in other threads that keywords in meta keywords are not important-----then why are we asked to supply keywords to wsa to analyze a page? How to get keywords for pages that don't show meta keywords in their source code ?

I'm not quite sure what you mean. Yes, meta keywords are not used for rankings in Google anymore, but they should still be present on the page and reflect the most frequent keywords on a page, the ones you are for.