The Mi6 is 1080p @ 5.5", this is 720p stretched to 5.5". If you're going with 720p then get a smaller phone, so the pixels per inch number is larger.
How is it a good deal when there are objectively much better phones available for the same price? Finding a product for its cheapest price available isn't a deal. If that was the case, every single product would be on HUKD at any given time. Everything is at its cheapest somewhere.