Is OPR an accurate measurement system?

[tindleroot]

Originally Posted by CJ_Elliott

But my question still stands. How valid is OPR if there are teams that can be tossed out of rank just because of a poor schedule, their teammates being broken, etc?

Since OPR is calculated under the implication that every team is playing at their normal ability every match, any situation where a team is playing below (or above) their ability is going to mess up OPR calculations not only for them but for other teams in their matches. Same goes for DPR (which essentially calculates how many points a team allows their opponents to score per match).