The Prodigy is larger than the Sumatran, and has the added jet: the "Soothing Seven."
They have the same warranty except the siding: 3 years for Tiger River Sumatran, and 5 years.
The Heater in the Sumatran is Stainless Steel with a five-year no-fault warranty, and the Heater in the Prodigy is Titanium with the same coverage.
The Prodigy has the no-bypass filtration and could use the Tri-X filters if you choose to pay for them, or if you can get the dealer to include them.
The major components are the same in both tubs.