When there is a comment to a question, you can easily get a link to it from its timestamp, and when pressed, it will make the page go to its anchor and highlight it without reloading the page.
But a link to another answer on the same question page, generated from the "share" link under the post, looks like this:
which, when posted in a comment, question or answer looks like this: http://stackoverflow.com/a/15530531/1306322, and, when clicked, causes the page to reload even though the link ends up on the same page. A round-trip to the server is needed to redirect you back to where you started out.
The link could instead be transformed into this:
which is already automatically given a title when used in a post: Tint a particular color in XNA
This link URL matches the current page but has an anchor in it, so clicking on it avoids a server roundtrip and page reload.
The shorter link will certainly look better for example on twitter, but it's not as good on the SE sites, especially in case it's used in the same question it leads to.