CREATE TABLE table_203_187 (id DECIMAL, "conference" TEXT, "bids" DECIMAL, "record" TEXT, "win %" DECIMAL, "quarterfinals" DECIMAL, "semifinals" DECIMAL, "final" DECIMAL, "champions" DECIMAL)

did atlantic coast conference or independent have a higher win percentage ?
SELECT "conference" FROM table_203_187 WHERE "conference" IN ('atlantic coast conference', 'independent') ORDER BY "win %" DESC LIMIT 1
SELECT "conference" FROM "table_203_187" WHERE "conference" IN ('atlantic coast conference', 'independent') ORDER BY "win %" DESC NULLS LAST LIMIT 1