Are Polaiya and Tianqidan in the same class?

According to what is worth buying in official website, Polaiya and Tianqidan are not in the same class. Polaiya belongs to the middle grade, and Tianqidan belongs to the first grade; Polaiya is a domestic brand, which belongs to the mid-range grade. However, compared with other domestic brands, Tianqidan is a high-end skin care series second only to Korea, with moderate price and high cost performance.