The AvE teardown mentioned this. It does give you uniform force across the entire work surface, which is theoretically superior, but I think it's a case where a 5% improvement in results does not warrant 75% increase in BOM cost and design, at least in v1 of a relatively virgin market (if the market were flooded with roller systems, you could possibly differentiate with a press based 1.0, but no need to do that out the gate in a virgin market.)