krahasuese


an organization, activity, etc. that is used to judge the performance of another similar organization or activity: » The comparators for Infobank are Ariba and Commerce One - all three provide online software.
1) Defining the scope of economic evaluation study and selection of comparators.

The present study describes key components used in defining the scope of economic evaluation study and selecting comparators. All relevant recommendations from international economic evaluation guidelines were reviewed and compared.

I'm going to be a stickler and suggest that this is more conceptually precise in the context. Thus, "...në dy vende sa për krahasim". This is because the countries in question are not doing the comparing but being used as a basis for a comparison which is being carried out by a third party. Obviously you may prefer a synonym along the same lines, e.g. "për efekt krahasimi".