"50 Year" shingle warranties are really only 10 year warranties because unless you're getting an extended warranty that can be offered by certified companies, they're pro-rated after year 10.
In this case the Owens Corning System Protection warranty is 50 years of non pro-rated coverage. That covers materials, labor, tear off and disposal.
The Owens Corning Preferred Protection offers the same as the System Protection Warranty except it includes 10 years of Workmanship coverage backed by the manufacturer.
The Owens Corning Platinum Protection Warranty is the same as the System Protection but includes "lifetime" workmanship warranty backed by the manufacturer. However, in my area I know of only two companies who actually are able to offer this warranty due to their requirements.
The Certainteed 4-Star SureStart warranty is a 50 year non-prorated warranty covering materials, labor, tear off and disposal.
The Certainteed 5-Star SureStart warranty is 50 years of non-prorated coverage that covers the materials, labor, tear off and disposal costs as well as covers 25 years of workmanship backed by the manufacturer.