This has been an interesting thread, so I decided to throw my 2 cents in on a few points, specifically Blackmoor's list and Nick's comment about tournaments. Let's do the latter first. Nick said:
I've lost games in local tourneys due to improbable events(say, having vulkan and a 5-man bonk squad assault a vanilla cpt. with 5 normal termies, lose combat, fail morale, and get run off the board.), only to watch a drastically inferior player(and army) win the top spot, because his road to victory was paved in kids and cupcakes. Does this prove that said player is good? FUCK NO it doesn't. I routinely destroy him head to head with whatever army I put on the table. Again, that doesn't prove I'm good...just that he's bad.
I get how this can happen in a tournament: I don't get how it can happen in many tournaments. The standard format is the Swiss - basically, top player plays top player, and so on. So after Turn 1, you have 1vs2, 3vs4, 5vs6 and so on. The games get harder. To really break out and secure the money at the end of the day, you have to beat the tougher competition. The only way I see Nick's example playing out is if each round the opponents were determined randomly. Even then, I'd expect the better players to use that to their advantage and maximize their Battle Points.
I play in small, medium, and large size tournaments, much like I'm sure many people here do... I've only ever seen the Swiss system. In our local tournaments, which we have monthly, the same people are constantly in the top quarter (it's why I'm always playing Evil Homer - we're always fighting for the win). That's not chance, that's skill. I'm sure you could say the competition in my area sucks; while I assure you it doesn't I have no way to prove it to you, except to say when the same players go out of town to Dallas or Oklahoma City, they end up in the top quarter and top tables their as well... point is, I think tournaments do prove something...
Even if that's only, "I play in tournaments."
Regarding Blackmoor's list, I'm sorry to tell you folks I can absolutely see how it could win. Mech has never been a formula for an auto-win. If one's opponents don't know how to capitalize on a weakness, it's not a weakness. Some points:
Eldrad and the Avatar are an extremely potent combo - they are both force multipliers, making each other and the army much harder. I used them in my Hybrid Eldar and it got me to Chicago for last year's Hard Boyz. Then I didn't 'dance with the list what brought me': like an idiot, I changed armies and went 50/50 on the day with a poor Chaos list, but I digress. The Avatar with Fortune against a Doomed opponent will beat face. The reason I stopped using it, besides retiring that force, is the new availability of psychic defense. Shut down Fortune, bye-bye Avatar.
Regarding the rest, if Blackmoor's opponents allow the game to be turned into a shooting match, well - count the shots. Obviously Blackmoor's job is to try and mold the game to his strength. Give him a turn of shooting and your transports are going poof.
I don't know Blackmoor, so this isn't me sticking up for a friend. I just like the application of critical thinking over blanket statements.
Part of what Stelek says he's trying to do is increase the percentage of decent lists on the circuit. For all that people here think it's obvious, the tournament circuit is slow to change. Blackmoor's list is viable until it does.
*shrugs* That's just my opinion; given that I'm lines on your computer screen, how much is it worth?