This is like the third time today you've stated something as fact that's demonstrably false. Can you please think before typing? A 737-800, the most common type used in Australia, has *four* window exits, not two. If you meant to say, two rows of window exits, then that's not correct either for all 737's, as a 737-700, which is also used in Australia, has only one pair of window exits. In addition, some older 737's have window exits that must be totally removed (disposable hatch type) while newer ones have the more modern hinged style.
Then you have A320's, which superficially look like 737's to the average punter, and often have hatch-style exit windows without hinges. Or you might be on an A321 which resembles an A320 at first until you realise that it has no window exits at all but instead full-sized doors in front of and behind the wing. Except that some newer A321's are different and have no door in front of the wing, still have the door behind the wing, and also two over-wing exits! (Haven't seen those in Australia yet but I think will be coming on the Qantas A321neo and A321XLR.)
Moral of the story is - every aircraft IS slightly different and you'd best pay attention. The requirement to listen to the cabin crew briefing is there for a reason.