Perhaps I'm confused due to all the warranty modifications. I personally think though it is more important to look at reality. Further, I believe if you install OC Duration shingles, if installed to their specification, you get a 130 mph wind rating.
Bottom line, in my humble opinion, if you install any of the primary manufacturer's 30 year laminated shingles to the exact same standards, you'll end up with the same real life wind rating.
What I think is more important, if you're consideration is warranty, is to look at each manufacturer's "Sure Start" warranty or whatever they want to call it. That is the warranty period for which an approved claim would result in a complete roof replacement (labor and all materials) paid for by the manufacturer. I believe GAF's is 10 years. On the other hand, Tamko's is 15 years. If you read the fine print in the limited portion of the warranties, I think you'll find (1) You would have a reasonably difficult time having a claim approved by the manufacturer since there are so many exceptions and caveats; and (2) The amount of money you would get would be minimal. Warranties outside of that initial period only cover that manufacturer's materials. So if you use their shingles, starter and cap, that's what you'll get paid for on a pro rated basis. So if you have a 30 year shingle, it is 15 years old, you get 50% of the value. When you consider the cost of the other materials, labor and disposal, you'd be lucky to recover 25% of your money. You also should check to see if that warranty covers present day costs or pays the pro rated cost of what you paid for the materials at the time of the roof replacement.
I can also tell you we've dealt with 3 different manufacturer's on warranty issues. We had a Tamko color mismatch, the Rep was out to the house within 48 hours of the request from us and approved the replacement pending verification by factory testing. With OC, we filed the claim online, they sent a packet, we had to go take samples and send them in to OC's lab. It took a approximately one month and a lot of badgering to get the approval. We recently had what I believe was a clear color mismatch issue with GAF. Their Rep was contacted 6 weeks ago. We've tried working with him for that entire time. Today he threw up his hands and said we'd have to take it up with their claims department.
Moral of that story: The warranty is only as good as the company that stands behind it or the quality of your attorney.
My recommendation is to pick any of the brands (GAF, OC, Certainteed, Tamko) based upon your color/cosmetic choice and price. Focus more on having a good quality contractor install the roof, that will impact the life of your roof more than anything else. We use 6 nails per shingle in our Southern locations and 5 nails per shingle at our Indiana location. We installed 200 roofs in all 4 quadrants of the greater Birmingham, AL area in the 12 months prior to the tornado and didn't have a single report of a shingle being blown off from any of our Customers. Admittedly, there had to be some luck involved (our Customers missed the very worst of the tornadoes and straight line winds) but without question, many of our roofs saw 100 + mph winds for an extended period of time without any failures. The majority of those roofs were Tamko, second was OC, third was Atlas with a sprinkling of GAF and Certainteed.