I get the idea (although the focus on the improved aerodynamics really should be called out as BS as it will make next to no difference).
The idea is that by shaping the edge and making it curved instead of flat, the trajectory of the ball after edging can be made more beneficial to the batsman. There is, however, one flaw with this. If it makes that much difference, it wouldn't be hard to counter.
The claim is that by introducing a kind of concave lens shape you can cause the ball to deviate differently, slightly wider and downwards more effectively.
Think about this for a second and you remember that a concave surface has a focus just like your satellite dish. This means that any batsman using one of these bats has just made it easier for the fielding team to determine where the ball will go when the batsman edges it as there is a focussing effect going on.
In essence, you could suggest that instead of three slips, you'd only need two to a batsman with one of these bats as the likelihood of the ball going to, say 1st slip, was reduced to so low that you could have an extra man at silly point. If the ball is going to go down and wide more, too, then you'd simply put 3rd, 4th and Gully in and step them forward a bit, instead of having 1st and 2nd slips.
I'm not sure the practical realities of having a dynamic, moveable set of fielders has been incorporated into the model for the benefits of what is essentially a gimmick...