### Database Schema:
CREATE TABLE matchs (
	Div	TEXT	NULL,
	Date	DATE	NULL,
	HomeTeam	TEXT	NULL,
	AwayTeam	TEXT	NULL,
	FTHG	INTEGER	NULL,
	FTAG	INTEGER	NULL,
	FTR	TEXT	NULL,
	season	INTEGER	NULL,
	foreign key (Div) references divisions (division)
);

CREATE TABLE divisions (
	division	TEXT	NOT NULL	PRIMARY KEY,
	name	TEXT	NULL,
	country	TEXT	NULL
);

### User's Query:
Which team had more home victories in the 2021 season's matches of the Bundesliga division, Augsburg or Mainz?

### Extra Knowledge:
Bundesliga is the name of division; more home victories refer to MAX(FTR = 'H)'; Augsburg and Mainz are names of teams and refer to HomeTeam;
SELECT CASE WHEN COUNT(CASE WHEN T1.HomeTeam = 'Augsburg' THEN 1 ELSE NULL END) - COUNT(CASE WHEN T1.HomeTeam = ' Mainz' THEN 1 ELSE NULL END) > 0 THEN 'Augsburg' ELSE 'Mainz' END FROM matchs AS T1 INNER JOIN divisions AS T2 ON T1.Div = T2.division WHERE T1.season = 2021 AND T1.FTR = 'H'