Yes, link size and placement does matter.
First of all, if your anchor text link is bolded or is heading size 1, 2, or 3, that link might get more weight.
Also, if the placement of the link is higher up on the page, this can also benefit you more.
Keep in mind that Google has put in place certain modifications to its algorithm so that WordPress footer links have less of an effect.
This is why it may be a good idea to earn or build links that are higher up on a page