Not stronger (or weaker)- lighter, but more importantly MUCH more stable. Fiberboard (web) and plywood (flange) is stronger and heavier than wood of the same d

Not stronger (or weaker)- lighter, but more importantly MUCH more stable. Fiberboard (web) and plywood (flange) is stronger and heavier than wood of the same dimensions, but the biggest draw is that humidity doesn't make it swell or shrink. Since it's all glued in place, they also don't come with any bend or twist, and you can actually make flat floors without low or high spots. The light weight means you can ship a huge number on the back of a truck, and they stack more efficiently than 2x8s or 2x10s.