What is the difference between a walker mower and a scag cougar. they are both 48" and 20 hp kohler but iwas w?

wondering which is better for leaf cleanup like sucking up the leaves? walkers are a lot of money and this one scag i found is 3000 $ in working order. will the scag do the same job on leaves as the walker will do? THanks|||Walkers are more versatile than a scag. Walkers can maneuver through a yard with grace and ease. They are lighter, quicker and can turn on a dime. They are easier to maintain and fix. IMO I would choose a walker.