how to compare games of vastly different speed?

Specifically, if I have to choose between the following games, which should I play?

A) 2-deck pitch, 1.5+/2 pen., S17, no DAS, the table is full (6-spot table) but I can play two spots. The game is exceedingly slow, as most of the hacks playing it are unfamiliar with holding the cards.

B) 6-deck shoe, 5.5/6 pen. S17, DAS, I'm playing heads-up or with, at most, one other person. I can play
exceptionally fast at this game, at a rate of perhaps 300 hands an hour.

So, is it better to play 300 hands an hour at the 6-decker, or to play 50-60 rounds an hour at the 2-decker. On paper, they're both fantastic games, though the 2-deck is clearly superior. However, how does one factor in this significant difference in hands per hour?