Did you see the Intel keynote? It overlaid images on the pipes and valves to show the direction of the flow. It looked similar to me. It looked a little like a demo that MS could have made to demo the usefulness of the HoloLens.
I saw the pictures you linked to. I'm not interested in watching the keynote. The pictures show no depth to the overlay, indicating is is a simple 2D image projected onto a transparent screen. Lining up the dotted line with the pipe would at best only involve sliding and warping the image so that it matches the position of the visor compared to the pipes.
Hololense, on the other hand, is effectively beaming lasers into your eyes to project 3d models that are being locked to physical locations. The laser beaming allows the models to match your focus (near models look blurry when focused on far things and vice versa) The difference between the two is literally the difference between a flat-screen tv and looking out the window. You have not seen anything like it and won't until you actually pick up a hololens (or a clone, when they finally come out). This is completely new display tech that has never been seen or used before, and I didn't even know it existed until the Hololens was announced. This is the impossible made possible, and it will be a shock to everyone when they first try it out.
The Intel demo I could basically put together myself with a picoprojector and a piece of glass with a reflective coating.
Not the same thing.
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