I can't even begin to point out the fail in this post.
The 3 "identical" Pirellis all have different speed and load ratings. Get some glasses dude. Tire Search Results
The differences between the MO (not OM) and AO versions is the cars that they are on. They aren't that different really.
You could have just answered the question without being an ass.
I could thank you for your answer, but I won't.
FWIW, my dealership is getting me the OMs for $340 a piece, installed. I consider that a great deal, because the dealership will refinish my wheels if the scratch them during the install process. I've had mucho trouble around here finding places that are willing to install tires AND gaurantee they won't scratch my wheels.