Opti-Seal does no correction at all.
It is a pure sealant.
Poli-Seal is a polish and does some correction.
I happen to like it. As mentioned by Scott P, Poli-Seal followed by Opti-Seal is a very good combination.
The only Poorboy's SSR I have used is the SSR2.5 and the Poli-Seal is no where close to beiong that aggressive. From what I have read, Poli-Seal is probably close to SSR1.