I agree Hegel is very great as well with regards with various aspects of philosophy but not greater than Kant on where it matters, counts and the ultimate.
Hegel was influenced by Kant.
Kant demonstrated why the absolute, thing-in-itself [aka noumenon, Ding an Sich] is to be taken in term of negative employment;
The Concept of a Noumenon is thus a merely limiting Concept, the Function of which is to curb the pretensions of Sensibility; and it is therefore only of negative employment. B311
Elsewhere he also showed why the thing-in-itself [aka Absolute] should NOT be reified.
If such an idea is to be used, then, it should only be used regulatively not constitutively.
From what I have read of Hegel’s main principle, he ignored all the above advice of Kant and reified the Absolute, aka the thing-in-itself.
My interpretation; Hegel was a victim and relapse on Kant’s warning on this;
They are sophistications not of men but of Pure Reason itself. Even the wisest of men cannot free himself from them. After long effort he perhaps succeeds in guarding himself against actual error; but he will never be able to free himself from the Illusion, which unceasingly mocks and torments him.
That is the illusion where,
the Ideas produce what, though a mere Illusion, is nonetheless irresistible, and the harmful influence of which we can barely succeed in neutralizing even by means of the severest criticism.
Here is another warning from Kant;
And since the Dialectical Illusion does not merely deceive us in our Judgments, but also, because of the Interest which we take in these [deceived] Judgments, has a certain natural attraction which it will always continue to possess,
It is unfortunately Hegel lost his intellectual grip on the above and psychologically [subliminal] succumb to the seductive illusion of the ‘Absolute’. Schopenhauer also suffered the same corrupted virus.
This ‘Absolute’ is the same as the Absolute Brahman of Hindu and other Pantheists.
In contrast, Kant non-reification of the Absolute is similar to that of the core of Buddhism.
On the above basis and where it counts, Kant’s philosophy is ‘greater’ than of Hegel’s.