The default position of the product tabs is below the section of product gallery and the information such as product title, price and add-to-cart buttons. Since this element only hooks to the default WooCommerce product tabs, all your add-ons for the product tabs works just fine and you can still make more out of it. You can place the tabs just in the place of product excerpt, or divide the enter section to show related products and the product tabs side-by-side and much more. You imagination is the limit.