He said it is absolutely "stupid good" for the money, but Lore is still Supreme. However, as a guy that moved from the $1K Lore to $2,500 Pendragon, I would say that these two models are going to be extremely close... based on the fact that atleast in principle, Lore and P'dragon are also similar. The fact is, this guy builds world class stuff for the money, period!
The cost difference is likely the Vifa vs. Audax tweeter. The Audax tweeters are more expensive. But still some may prefer the Vifa tweeter. If you do a search on Eminence, you should be able to basically figure out the driver he's using...
The woofer in the Pendragon looks like an Eminence Legend BP-02, although Eric may be using a different spec driver than what we would buy off the shelf. And with that in mind, the driver in Oriel "looks like" one of the Delta series drivers. The point to remember with these two designs (Lore v Oriel), but NOT speaking for Eric here... is that the Lore driver has a whizzer and therefore it is going to hand off to the tweeter higher up (around 3Khz I believe), where as with the Oriel, I would assume that it is going to hand off to the tweeter quite a bit lower than that. Still, Eric is all about simpliciy so I would assume that in both of the these, execution is well done. Hope this helps...