To gain notoriety, Hegel, who, while Shelling was already teaching and popular, was still a Privatdozent, wrote the Differenzschrift - a comparison of Shelling and Fichte’s philosophies.
Hegel did not have any animosity towards Shelling - they were still colleagues, and though the latter’s success may have annoyed him slightly, he said that success is hardly an indicator of value.
According to Kant, there are two types of judgements: determining and reflective.