I'm not sure what the question is? Are kids brand aware? Of course they are, in as much as they recognise brands. Have you never played the logo game on a smartphone? My 10 year old is great at it.
But what does that mean? Just because a brand is known doesn't necessarily give it a value over other brands.
What do you think? Is Nike better than Adidas? Puma better than Umbro? Warrior better than Lotto? I don't know so sure as s**t a 5 or 8 year old won't give a monkey's.