Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_203_350 ( id number, "team #1" text, "agg." text, "team #2" text, "1st leg" text, "2nd leg" text )

### Question ###
how many more points did kallithea score in the first leg of the second round of the 198485 greek cup than the second leg ?

### Accurate SQL ###

SELECT (SELECT "1st leg" FROM table_203_350 WHERE "team #1" = 'kallithea') - (SELECT "2nd leg" FROM table_203_350 WHERE "team #1" = 'kallithea')