It is not and neither are any of the other projectors under a few thousand pounds true 4k. Saying that this projector being one of the cheapest and brightest is probably the best of that bunch. It certainly produces a far better image than 1080P which can cost nearly as much.
This projector is also smaller than a lot of the other 4K projectors which if used in a dual purpose room like a lounge may be preferred by those not wanting a huge box on the ceiling or wall, its much more conspicuous as is the colour, being white it seems to blend in more.
Another feature that other projectors can suffer from are fan noise levels, this view sonic never seems to reach a noticeable level intact you barely notice it even when trying to listen.
People wanting to use this in rooms with a lot of light will also be happy, the great lumens and contrast ration ensure a vivid bright image at all times - although it really comes into its own at night, this is when the picture pops and looks great!
This will be the choice for people wanting a 4k projector on a budget, but if you really want the very best, then you probably need to spend about 5 times as much. If you are comparing to projectors at double the price than i'd recommend saving the cash and buying the view sonic as those projectors are definitely not twice as good!