I agree, it’s one of the harder ones in my collection.
I would say slightly tougher on the tenor because of the key and especially when hitting that B and Bb pattern as in the 2nd bar of the melody.
you can’t use the bis key for Bb because it goes back and forth to the B natural.
also it’ll help if you work out those 16th note patterns, they can really slow you down otherwise.
practice them slow and diligently and work up to speed.
those are the kind of things I would talk about in a tutorial video, one I just can’t do at the moment because of too many commitments.