Usually, a lower aspect wing makes carving and jibing easier, as it turns faster and has softer stall.
Also, a more overall lifting wing, will make jibing easier for most riders.
Both of above are the slower wings so to speak.
Turning faster at slower speed means you can turn narrow with little input, and you dont get slack lines as easy, so you have more control and pull from the kite to make the feet switch at "any time", or just carve back and fourth.
I dont know the Airush compared to the Silente precisely, but it seems, the Airush is quite high AR, and the Silente medium, so this could very well explain.
Apart from this, MANY other parameters are important in the full constellation, like the wing design and profile, and the same for the rear wing - apart from sizes and distances to strut.
Extremely individual, those used to speed might find a faster racewing with low torque (less pitching moment, goes much smoother) is easier to jibe, where others like the slower tight turning lifting wings.
Just one angle on this - my wings are very different to carve, but generally the low AR big ones are the easiest, then the smaller low AR ones (both are wave types), then the big high AR ones, and finally the small high AR are the most difficult to carve and jibe.
IMO only, important