wide cut

I just got an MTD FLORICO 76 lawn tractor with a single wide mower deck. Its weird it has multiple short blades bolted to a central hub. Ive never seen anything like it. The seller said it was a professional model but it is terrible at cutting tall grass. Can anyone tell me, is this meant for...

Looking to buy a walk behind mower that cuts wide. I saw some ads about Toro. I'm open to suggestions. Thank you in advance.