Huawei Watch Ultimate vs Huawei Watch GT 3 Pro: What’s the difference?

Huawei is building out its wearables portfolio and has released its first watch made from a zirconium alloy, and building it to be more durable, more waterproof, more corrosion-resistant and more powerful than previous models. It does share a lot of features with the Watch GT 3 Pro, however, so exactly how do the two models compare?