Did Nwanko make a difference for Smyrna last year? Yes. Would they have been in the same position without him last year? I also say yes. Mears is a good coach with good players and the way the brackets shook out, Smyrna still would've won because the big fella really didn't do much in the Final Four. It was all Garnett and Matthews.
I say this as a guy who can remember what a shock it was when Seaford won in '97 and Lake Forest got to the title game in '99 - the balance of power HAS shifted. More opportunities downstate for kids to play and the charter/private school movement has eaten upper New Castle County public schools alive. South of the Canal/Middletown has been better across the board in every sport this year, and I don't think that'll change anytime soon.