There's another part of the talk (not included in the linked clip) where someone asks Steve what things they'll do differently than the rest of the industry. Steve responds that being different isn't important; what's important is being better. The two have a back and forth on this issue — it's hilarious in hindsight given the perfectionist nature that Apple has come to embody.
And for what it's worth, the market seems to have proven Steve right. Nowadays, we can see some of Apple's competitors resorting to "different" in an attempt to gain traction. Doesn't seem to be working for them, either.
That is also a great example of how often Steve Jobs contradicted himself. After saying he didn't care about being different or spending money on TV ads, he started his talk at the next WWDC with the "Think Different" TV ad.
Perhaps Apple thinks different by being better, not just different for the sake of being different. I think maybe you're giving evidence for, not against, the post you replied to.
And for what it's worth, the market seems to have proven Steve right. Nowadays, we can see some of Apple's competitors resorting to "different" in an attempt to gain traction. Doesn't seem to be working for them, either.