How many home victories does the Bundesliga division have in more or less than the Premier League division in the 2021 season?
Bundesliga and the Premier League are names of division; home victories refer to FTR = 'H', where H stands for home victory; SUBTRACT(COUNT(FTR = 'H' where season = 2021, name = 'Bundesliga'), COUNT(FTR = 'H' where season = 2021, name = 'Premier League'));
SELECT COUNT(CASE WHEN T2.name = 'Bundesliga' THEN 1 ELSE NULL END) - COUNT(CASE WHEN T2.name = 'Premier League' THEN 1 ELSE NULL END) FROM matchs AS T1 INNER JOIN divisions AS T2 ON T1.Div = T2.division WHERE T1.season = 2021 AND T1.FTR = 'H'