That's a very light tent at a very low price. It's made in China. I've no knowledge of the brand, but the feeling I'm getting is that you get what you pay for. And it's a two-person tent, which should make it heavier.
The classic ultra-light tent seems to be the
Terra Nova Laser Competition. I've never been able to afford one! At the bottom of that page are some others. The Wild Country Zephyros looks good. The Vango Soul 100 isn't in the same league, but is similar in price and style to the one you suggested, and comes from a proven manufacturer. The same is true of my Coleman Epsilon 2, which is no longer made, but the
Cobra is not dissimilar. Note that many of these are one-man tents; unless you're really trying for minimum weight, many people like the extra space of a nominal two-man tent.
If you're getting the idea that I'd buy any of these in preference to the one in your link, I'm afraid you're right.