That image looks like it was taken with either a real tilt-shift or just a really shallow depth of field.
edit - this quotation from the photographer's profile seems to confirm this:
I do edit and enhance some of my photos (not all), but all
manipulation is always kept to a minimum in my photography. I take
pride in my skill and the knowledge I have that goes into taking a
good photograph, and I would never spoil this with the ease of photo
manipulation. That's a different art.
The problem with those simple fake tilt shift tutorials is that they only work when you have an image taken from above looking down, so that distance decreases from top to bottom in the image. The source image in the link you posted is a good example of this.
The Flickr image you posted was taken from a lower viewpoint level with the subject. To get this effect in Photoshop you'd have to mask the person first so the blurring effect is not applied to them, otherwise their head would be just as blurry as the background. This adds a level of complexity generally not covered by "fake miniature" tutorials.