Content Egg has many pro features which you can find on top comparison sites. Creating such sites is possible now for everyone without spending thousands of dollars for developers and content makers.
Demo: https://codecanyon.net/item/content-egg-all-in-one-plugin-for-affiliate-comparison-deal-sites/19195707
REHub is a modern multipurpose hybrid theme. Theme covers many modern Business models for online websites.
Demo: https://themeforest.net/item/rehub-directory-multi-vendor-shop-coupon-affiliate-theme/7646339
Alike is a WordPress post comparison plugin. It will work with any post types or custom post type. e.g. property, cars, products, anything.
Blurb Price Comparison, Affiliate Website, Multivendor Store, Product Review and Social Business. Who can do business affiliate Marketers and focus on affiliate based product.
Demo: https://themeforest.net/item/blurb-price-comparison-affiliate-website-multivendor-store-and-product-review-html5-template/20880845
Price Compare - Price Comparison WordPress Theme is the most complete and thoroughly made solution for price comparison web businesses.
Demo: https://themeforest.net/item/price-compare-price-comparison-wordpress-theme/12488367
CompareAzon allows you to embed and compare several Amazon products and provide relevant information - product advantages and disadvantages into a great looking comparison table!
Demo: https://codecanyon.net/item/compareazon-amazon-product-comparison-tables/25174542