I have no idea if you're taking what he said out of context, since it's been stripped down to a bare quote, but I'm sure his intentions were not meant as you seem to think. Perhaps he was talking about someone who was trying to run a Heroic dungeon with better geared guildies. I couldn't say for sure without heading over to do more reading. Aside from that, I'll give you our insight based on discussions we've had on this end of the big drink.
From our discussions here, and while people can "game" the gear item level, we definitely want to encourage people to be careful in "gaming" the system. While you can do it, it may result in your being unhappy with the end result because you didn't really have the gear necessary to accomplish what you needed to do in a dungeon. The choice is ultimately yours.
In the "Wow, Dungeons are Hard!" blog post by Ghostcrawler ( http://us.battle.net/wow/en/blog/2053469
) he mentions the idea of item level and what we think we should have done better in general with item level and the progression to get to Heroics.
First, item level is a necessary -- but not sufficient -- hoop to jump through when using the Dungeon Finder for Heroics. We should have also made sure players had at least seen the content on normal mode before. Maybe we should have had Burning Crusade-like attunements. Maybe we should have made the item level requirements pretty relaxed if you’re going with a premade group and much stricter if you’re going with a pick-up group. We’d love to implement (and have some long-term plans that include) better ways to detect if you know what you’re doing other than just the gear you’ve accumulated. Overall, we just needed to state more clearly that Heroic dungeons are intended as a destination, not a first step.