To quantify properly $loss, you also need to take into account, how many times staked in a given hour. Slower for Roulette where individuals have to be given time to stake, ball needs to spins and winners have to be paid individually at varying odds. Dice/Craps are the same.

BlackJack is relatively fast but can be slow if half or more of the players are novices and take ages to make up their minds what to do. Best odds (ie lowest lost) is definitely BlackJack but number of stakes per given hour is significantly more so the Expected Loss could be just as high if not higher.

Speed of slots are dependant on how fast the player hits the button. Slowed down each time the player had to feed the machine (when was the last time you saw a slot take coins) or makes a physical payment (why do you ticket Las Vegas casinos now accept and issue vouchers).

Baccarat could be very fast but the dealers just slow it down big time to make a show of it as stakes are high.