Let's say i have pr5 domain and pr5 subdomain(on other domain) So which backlink is stronger?Backlink on pr5 domain or backlink on pr5 subdomain ?
Well only guess work. But i my view Domain is going to fair better than sub-domain for obvious reason. But I am not sure.
Are both the sites related to your niche? How long have both been PR 5's ? How many outbound links on both ?