We do not measure the offset as a part of the MPF equation. However, models with more offset usually have a more rearward cg location, which can have a positive affect on the MPF rating. Many models have progressive offset, with more offset in the longer irons progressing to less in the shorter irons. The more offset in the longer irons is designed to improve the playability in the harder to hit long irons. More offset, as I just mentioned, moves the rearward cg further back which can make it easier to get the ball in the air, and also gives the clubface a little more time to square in the impact zone. It is not necessary to have more offset in a design for it to have a high playability. As an example, you could look at our DBM and TE forged irons. Both have very little offset (.100″) and are both Super Game Improvement designs. In determining if more offset would be a benefit, you must determine if the player needs assistance in getting the ball airborne. If so, the combination of a low, rearward cg and offset are features that could be a benefit. Also, the look of the offset must be acceptable. Some players simply do not like the look. If they do not like the look of an offset iron, no matter how much they may need the benefits associated with offset, they most likely will struggle with an offset design.