[billbo911]

Originally Posted by Jacob Plicque

Did the OPR miss the mark for the Florida Regional? The alliance of 1251 + 1612 + 86 won the whole shebang with a combined OPR of 5.4 versus alliances with group OPRs of 9.9, 9.2, 7.1, 6.4, 5.6, 5.2, and 5.10. If OPR were a good predictor wouldn't the team of 1592 + 179 + 3164 be a virtual lock with a group OPR of 9.9? In the past OPR usually was a good indicator of the strongest alliance in the elimination rounds. In the Quarterfinals, the top three teams by group OPR were knocked off.

Great observation.
You need to understand, OPR is just one tool to help you decide. I'll bet in qualifications, 1251, 1612 and 86 were not able to compete along side teams that would compliment their game strategies or abilities. Look at it as a perfect storm. When you bring three teams together that fully complimented each others abilities and were able to play as a single unit, their performance as an alliance would be way better than they were able to show individually during qualifications.
This is why raw numbers is not always your best predictor. Observation and paying attention to all input is a scout's best approach. Leaning on one detail, like OPR, can be mis-leading.