The asus cost's more because it has more features, better board cooling, more power phases, and is a brand name.
Asus has a much more refined look to it, while the biostar looks like it needs to be thrown back into the oven to cook some more.
In the end though, the asus is $80 more, so you have to determine if the price is worth it to you.
Plus, Asus has a better warranty and a lot of times, better bios(or UEFI) support.
And the Tp67XE has UEFI bios as well