Full alloy subframe, sound deadening material inside the swingarm & engine cases & frame, etc. The Beta does not have to meet the same emissions requirements as KTM & Husky, and KTM/Husky do not have to meet the requirements that Honda has to meet.
It all comes down to the number of unit sold per year, meaning Beta is considered a boutique manufacturer & is subject to the least restrictive requirements.
Oh, when I say ‘emissions’ I don’t just mean exhaust – it also covers noise emissions, drive-by noise, etc. All that shit adds up in weight.
Lastly, KTM & Beta can be a little more aggressive with their engineering & weight savings. This isn’t exactly the case for the Jap manufacturers since the CRF reliability will have to fall in line with other Honda products, whether you’re talking a Gold Wing, Civic, etc.
I dunno if I’d be brave enough to buy an Italian made dual sport. You should go to a dealership & ask 'em to remove the seat to give you a better look at the hornet’s nest of a wiring harness – you’ll shit urself. Electrics are the most common Beta issues.