I've already done a test gauntlet thing with Lurker before, and it was absolutely stupid. He whined and complained that my optimization level was too high. It was Factotum vs Rogue, and I had a Human Factotum 5 with Font of Inspiration X2 and EWP: Gnomish Quickrazor, riding a purchased 1HD advanced Warbeast Desmoderu Hunting Bat (MMII)), and my level 6 and 9 feats were going to be Item Familiar and Create Wonderous Item. Mostly he whined that Item Familiars were too powerful and that the Warbeast Hunting Bat didn't have a listed cost (it does, in the Warbeast template), couldn't carry a human (it has a 600 pound light load) and wasn't something that could be purchased (it's the cheapest domesticated flyer that a human can ride, and it's bred "in the same way that humans breed hunting dogs").
Then his entry? A Necropolitan Halfling Rogue with Item Familiar set up as an alchemy thrower. Far more optimized than what I'd thrown out... mine was actually something I was using in an upcoming campaign, whereas I'm not sure I've ever even seen a potion thrower Rogue used.
So no, I will not do a face off against him again, as it will not be productive and would have far too much whining with far too little actual result. He's just as honest in build challenges as he is in debates.
Meanwhile, I'm watching a Beguiler and a Sorcerer, both of very similar (and very high) optimization levels in the same group right now. Both are Venerable Dragonwrought Kobolds. The Sorcerer has Loredrake, the Beguiler has one of the Archtypes that gives all Cleric spells. They're level 2. As you can imagine, the Sorcerer is currently far superior due to having second level spells at level 2, though the Beguiler being able to cast Lesser Vigor really helps since both our primary healers (a DMM Cleric and a Crusader) are out of commission for a few weeks (stupid confusion trap!). In another game (low power, low wealth), there was a Sorcerer and a Beguiler, but the Beguiler died when he got caught alone and trapped with a bunch of enemies and no way to actually kill them, and is now reanimated as my pet Corpse Creature (go Dread Necromancer!). The Sorcerer is still up and running in that game, still using Glitterdust to great effect as our DM likes using Illusions mid fight and Glitterdust can really help with that.
JaronK