1. No, there is no option for that. The buttons are only available on products listings.
2. You can potentially add the products to a wishlist (and then you can have a button "add to wishlist" in the product page and on listings). That will allow you to display a wishlist module with the products. And in the Wishlist section of the Features tab of the configuration, there is an option to allow your users to compare products of their wishlists. So you could potentially use the wishlist system as a more advanced comparison system.