Being thinner should allow for a better grip -- especially for little hands. My totally unscientific reasoning is the more efficiently you can transfer the weig

Being thinner should allow for a better grip -- especially for little hands. My totally unscientific reasoning is the more efficiently you can transfer the weight into your fingers (being spread wider) the more comfortable it will be to hold the weight. This can also help with wrist fatigue if it allows you to find a more comfortable resting position. Lastly the sharper angle on the back should make it easier to lift when sitting flat on a surface. Perhaps all small things but for hours of usage it can add up.