It depends on the toddler and if they are able to be occupied the whole time.
Still don't see how a toddler would make one product better then a different product.
What I'm saying seems pretty straight forward to me.
If you're traveling alone then the most privacy you get, the better, no? But if you are traveling with someone, you want to be able to talk to them at least, right? Now, add a child to the mix. More than talk to them, you want to be able to put him to sleep and "deal" with him on the flight.
So, based on that, certain products may get downgraded, and other products would get an upgraded rank.
For instance, VS J uses a herringbone layout, which looks appealing to my anti-social self. I wouldn't want to travel with my wife on such a layout, and certainly not with a kid.