First of all, this thread is about Opti-Seal, not Opti-Coat.
I looked up the Quantum-Shield and it appears to be the usual dealer snake oil product. I don't see it protecting agains light scratches and swirling; I read the warranty and the as-long-as-your-arm list of things that it doesn't cover or will void your warranty includes "abrasion". It basically covers the paint peeling off.
Here's what it covers:
If during the Term of this Limited Warranty the exterior surfaces of the Vehicle are damaged by weather induced oxidation, fading, industrial fallout, or loss of gloss following the professional application of Sealant, We will then have the affected area repaired and will have the Sealant reapplied by Your issuing Dealer.
Notice it doesn't mention bird poop, tree sap, etc. Here's what's excluded:
1. Cleaning and/or repairs not authorized by Us or performed by a repair facility that the Administrator did not authorize.
9. Damage caused by accident, road hazards not specifically listed, abuse, vandalism, fire, flood, wind, acids, dyes, paints, bleach, inks, gum, tar, nail polish, burns, corrosive chemicals, materials or liquids with caustic usage warnings(including insect repellant), petroleum products, rust and/or corrosion, hail, stone or sand chipping, abrasion, clearcoat or paint flaking or paint chipping; or modifications or alterations of the
factory’s original painted finish(i.e. repainted surfaces, aftermarket pin striping, etc.).
Notice cleaning is not allowed, so it might be interpreted that if you wash your car, you void your warranty, although that clause may also refer to the interior protection. I'd bet dollars to donuts that Opti-Coat is NOT "the same thing" and that OC will far, far, far outlast and out-perform Quantum-Shield.
However, the topic of this thread is Opti-Seal, which may perform comparably to Quantum-Shield, and it's a lot cheaper than Quantum-Shield, which I saw you can buy on eBay right now for $300, so go for it if that's what you want.