Creates a 301 redirect for any changes in permalinks (URLs). It's hard to say how much this function is in demand and who needs it, but I have never used this function of the plugin. I mean, if I needed a 301 redirect, I put it in .htaccess. And it is highly discouraged to change permalinks for already published pages! And in my opinion no one is doing this;
It is possible to customize the description and keywords separately for each category and label;
You can specify robots values: index, noindex, follow, etc. for each post or page separately. (for all types of archives index, noindex (indexing) is configured in the same way as in platinum SEO)
By and large, All in One SEO Pack has no advantages, the only thing is point 3 - integration with e-Commerce. Everything else: nonce protection, API, etc. are not that important. As for the canonical URL feature (present in both plugins), this canonical meta tag has already been implemented in WordPress itself since version 2.9.
