What’s the benefit of this set up over traditional bridle wires? I’m pretty sure my cat has an oversized jib and was wondering if it was required for the bigger sail?
The reverse dolphin-striker arrangement that you have is to help prevent the bows being pulled in together too much, as with typical bridle wires. The hulls then do not need as much transverse stiffening, which makes them a little lighter-weight. What you have is better than bridles, and it allows the jib tack to be lower, thus keeps the center of lift (thrust) of the jib lower.
Fun Factoid:
The bow cross beam's striker and tensile structure for the forestay is called a 'martingale.'
Pelican Striker
In contrast to a downward pointing dolphin striker, a pelican striker[1] is a small vertical spar or pyramid arrangement attached to the top of the crossbar joining the two bows of a catamaran. Its purpose is to resist the upward pressure on the centre of the crossbar where the forestay is attached.
Pelican Strike
Right!... Also called a Martingale.
https://en.wikipedia.org/wiki/Dolphin_striker