CREATE TABLE table_203_390 (id DECIMAL, "year" DECIMAL, "venue" TEXT, "winners" TEXT, "runner-up" TEXT, "3rd place" TEXT)

from 2005-2012 , in the team speedway junior world championship , how many more first place wins than all other teams put together ?
SELECT "winners" FROM table_203_390 GROUP BY "winners" ORDER BY COUNT(*) DESC LIMIT 1
SELECT "winners" FROM "table_203_390" GROUP BY "winners" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1