On my iPad it is a very similar font just a couple of sizes larger and easier to read than the standard size. It must appear different on different devices. On my iPad it was a better read so I thought it was for everybody...
Maybe it is device specific. I have the opposite problem with your posts where you're quoting from an article. Your regular font looks like everyone else's, but the part you're quoting looks really tiny and is hard (for me) to read.