Agreed, Dan.

Blizzard needs to make up their collective minds on this one.
Are large guilds with 25+ raiders "superior" to smaller, less hardcore guilds with 10+ raiders, or not?

I know my guild has no trouble running two separate Karazhan groups per week, but it took us literally hours to put together a 25-man group for our first Gruul's attempt.

David Sirlin has some strong opinions on this point, which I happen to agree with. Larger groups can have different loot,
but it should not be "better" loot.

why shouldn't it be better loot? You said it yourself, it's harder to coordinate a group that large! It should be a nice reward for being a part of such a group, otherwise, why run a 25-man? Just run your 10-man raids and be done with it!

He's obviously talking about just the look of the sets in your first quote where your second quote is referring to the stats. Just because its a "separate line of progression." doesn't mean that the 25 wont be more difficult than the 10 mans, he's simply saying that the 10 man doesn't make it a waltz in the park to get the exact same armor, etc as the 25 man. They will both have their difficulties and rewards, with the 25 man I'm sure being harder and the rewards from that being equivalent to the extra effort and manpower required for them.

Thanks for the clarification, Eliah. I kinda figured as I was typing it that was the case.

In terms of which is harder: Each mode has it's own type of difficulties and solutions that blizz has baked in. 25 mans are more difficult to run because there are more moving pieces but you benefit from stronger and more adaptive raid synergy. 10 mans have more demanding spot allotments because you have fewer tools to bring to bear but you can do it with a more manageable number of people.

I don't understand the confusion by those points. The items will look similar in regards to design. The 25-person armour stats wise will be a tier above the stats of the 10-person. Same model, different stats.