Patrick Frater Asia Bureau ChiefThe release of “Sonic the Hedgehog 2” and “Ambulance” gave Hollywood a rare one-two-three at the South Korean box office over the weekend. But neither newcomer managed to earn $1 million in another deeply depressed session.“Sonic 2” earned $843,000 over the weekend and $979,000 over its opening five days, according to data from Kobis, the theatrical tracking service operated by the Korean Film Council (Kofic).“Ambulance” earned $450,000 between Friday and Sunday and a total of $674,000 over its five days since release on Wednesday.