2 Product blocks on one page. Two answers for one product is worse than one: an app and the theme often each write their own.
A count of fields says what a page's data states, read before any script runs. It does not decide eligibility: Merchant Center and Google's own review decide whether a product shows in merchant listings, Universal Cart or any other Google feature.
The Shop Ready skill works in your store's own theme with Claude Code, Codex or Cursor, writes every field from the product's own data, and checks the live pages with mttr after. On Shopify, mttr can do it from the admin: that is in beta.