The ones who make the saws will give different answers, to the ones who market them.
If you wanted a better answer, then you'd have to be more specific, and mention anti clastic curvature,
i.e what the profile becomes when installed on the wheels, and not what it looks like, but how it acts.
Then you might get somewhere....
It's a big part of the puzzle which sells more bandsaws, or for a friendlier answer...to throw off the competition.
Take yer pick!