What is the strength of Ultraman Tiga's dark form?

Dark Diga is invincible. First of all, Dark Diga has existed since the beginning of the universe, and so has Noah, so Heidi is at least as good as Noah. In addition, Heidi represents darkness, and Noah represents light. Darkness has stronger combat power than light, so Heidi is more powerful, and Dark Diga has the ability to absorb darkness. The more darkness there is, the stronger Heidi is. As long as Heidi is willing, Heidi can be infinitely stronger. In the end, Camilla personally said that Heidi and the four of them had destroyed the super-ancient civilization, and Gatan was too scared to come out. This is an indisputable fact. To sum up, Heidi is number one in the universe. No country of light is worthy of carrying Heidi's shoes. Not to mention data, only Dagu Heidi can't do it. The reason why Dagu Heidi is weak is because Dagu doesn't know how to use it, and Dagu's The Heart of Light also affected Heidi's performance. Under the combined effect, Dagu Heidi could not even perform one thousandth of Heidi's true self