I can see that there is a certain masculine appeal to Kruse, with his shameless and unwavering confidence (especially compared with Peat's somewhat hesitant and quivering voice,) but I would not take medical advice from him.
Peat has a certain honesty and authenticity about him; he seems to communicate in simple and common terms so that his audience can fully grasp his ideas.
Kruse, on the other hand, shrouds his ideas in a mist of biological jargon so dense that I doubt even he has the faintest sense of what he's saying most of the time.