LOL. So I started listening to this at 1.5 speed (to get through it quicker as I usually do), and he's playing DuBay at 1.5 speed, making it impossible for me to hear what DuBay is saying. I'll go back and listen later.
DuBay is not exactly the intellectual heavy-hitter when it comes to FEs, but has more of a popular appeal. There are some really bright guys on the GlobeBusters program that it might be good for him to debate. There's that Nathan Oakley guy, but I don't care for his style, plus he uses a lot of profanity. He uses the same style of ridicule and mockery that, oh, Non-Professor Dave uses. It's an unhelpful tactic. Oakley is very bright, but the style is very off-putting.
I really don't care for these video exchanges. It makes for one-sided debate really. DuBay isn't around to rebut the criticisms of his points. Dr. Sungenis is saying that by playing DuBay's video, the FE side is being heard and fully represented, but I would disagree. You're getting a high-level view of the narrative in the popular style of DuBay that glosses over a lot of the detail or fact behind his arguments. Another good one to debate would be Dr. John D, who is a scientific heavy-hitter. Unlike DuBay, however, he's not super popular because he has a very dry style and he does dive very deep into his scientific analysis, taking painstaking measurements, laying out the analysis. Dr. John D might take 2 hours to make an argument that DuBay would summarize and gloss over in 2 minutes. This is why DuBay might get 2 million views, while Dr. John D gets 15. Dr. John D has a PhD in spectrometry, so is highly qualiified to debate the issue. But he's "boring". Really the only place you see him represeted is through other more "popular" Flat Earthers who then summarize his videos.