If u want to do Generic Comparision:
There are three componetns:
Thanks David and Nitin, Actually I checked with DCSSampleCatalog and In this they are comparing between two product and using ProductList for comparison, It seems like ProductList, ProductListContains, ProductListHandler( because of their names) are being used to compare between two products.
I checked for SKU comparison Selecting two SKUs to Compare and they are using CompareSkusFormHandler for comparing between two SKUs, but the problem is CompareSkusFormHandler is deprecated now.
I am looking for alternative of CompareSkusFormHandler which can used to compare to SKU(same product).
Appreciate all your support.