I think because people with 35 BMI and above are normally bigger...

I think because people with 35 BMI and above are normally bigger than the dexa scanning bed, so maybe myfiziq wanted to say they can do those too.
In any case I think 95% or 97% of correlation makes no difference in the obesity ranges. What I really like is that a user can use this technology as many times as they wish without warring about radiations. Its really cool if it can say and track where in the body the fat is lost or gained