well as we all know higher PR = more powerful link juice
yea i know but i just thought on tumblr its on subdomain so it Wasn't as good as having a regular pr domain linking back to your money site?
so your tumblr blog's content has to be related to your money site.
Yes I do agree that he has to use both. But he is asking for comparison and I am saying my experience with wp. Posting on related blogs always helped me and I am not saying backlinks have to be dedicated to that. I always use a variety but relativity does count.Seriously? If people stuck to only making related backlinks, a lot of us would have hardly any. Some of my sites have barely any competition due to the lack of variety in the niche. It doesn't have to be related. Link using both the WP and Tumblr blogs.
I also second that.Ok now I see your point. still I think the PR of the tumblr trumps the wordpress blog and thus makes a greater impact on your rankings