The single engine boats are better mannered at the helm when using the reverse bucket, the engine and pump are at a lower point in the center of the hull and the transom responds faster to corrections at the wheel.
Everything that matters in a jet hull and pump is designed to make it go forward and turn sharply, the reverse function is just one step ahead of a push pole on it's best day.
Next time you want the transom to back to starboard in reverse, put the wheel hard to port and reverse the port pump bucket and leave the starboard in neutral and use as much throttle as needed to get it moving the direction you want it to. Reverse procedure when you want the transom to back to port, put the wheel hard over to starboard, reverse the starboard pump bucket and leave the port in neutral by using a single pump with more rpm's on a twin you're sending one concentrated stream of water up under the hull pulling the outside edge of the transom in the direction of the turn instead of two of them crossing paths under the hull.
It takes a little practice to get good at it, and defies the backing procedure one may be familiar with piloting any twin screw propped I/O or inboard but works better for getting a twin jet boat to back up faster to one side or the other especially if winds or current are a factor when leaving a launch dock.