North Carolina, USA
This is also my experience. I haven't noticed Arais being any noiser than other helmets I've worn, but the multi is definitely one of the noisiest motorcycles I've owned. It took me forever to find a solution as far as the wind roar. I have some of the old "Aztec" spacers to change the windscreen angle, and also hiss flaps mounted on either side. These have pretty much eliminated the constant wind roar I got off the screen. I think one has to tinker with their wind protection to help with the noise this bike produces, and changing helmets can only do so much.I've used Shoei for decades. Since getting my Multi, I've had a GTAir and now the GTAir2. They are definitely quiet helmets but, the angle of the screen on the MTS directs air straight into the visor. When I stand up, out of the turbulence, it becomes sooo much more quiet. So I just installed the 3D printed spacers from Iconic parts. They've helped a bunch in directing the air up to the very top of and over my helmet. More testing needed though.
So it would be my recommendation to look into screen options or the spacers that change the angle of the screen. Guys even state the clip on defectors do wonders. It may not be the Arai but the aero of the OE screen making it seem louder that it is in clean air.