Kobe was voted in for reasons other than his nationality, that's the distinction
And why is that distinction important, to begin with? Do you know why Kobe was voted in? Because he was being anointed and promoted, by the league and by commercial companies, as Jordan's successor - therefore, he was hugely popular. And do you think he'd have such a strong PR campaign - and therefore the ASG votes - if he wasn't an American kid with a game so similar to Jordan's? No way. Kobe being an American - and easy to sell to Americans - was a big reason why he was voted into the ASG in his 2nd season.
Also, yes, Kobe was a substantially better player as a sophomore than Yi is now.
Substantially? I don't even think he was better, but anyway, that's beyond the point, as long as you agree Kobe was very far from being All-Star material, from that meritocratic perspective.