This
video shows heavy reflections - as expected for a glossy plain-technology LCD.
A grossly over-hyped product for aviation.
Compare it with
this image of a tablet with a specialised sunlight-readable screen, taken in direct sunlight. Most tablets on the market are not available with this type of LCD (and the LS800 in the last pic is no longer made) but the more expensive ones are available with it e.g.
this one.