I understand the concept of bounce as it applies to wedges, and why you need less or more bounce depending on the conditions you play in (fluffy sand, etc.).
However, my question applies to iron sets, normally 4 to pitching wedge. More specifically, game improvement iron sets.
I have recently found that some iron sets have very high bounce numbers (such as Callaway Razr X, where a 4 iron has 3 degrees and 7 iron has 5 degrees) and some iron sets have very low bounce numbers (such as Mizuno JPX 825, where 4 iron has -1.5 degrees and 7 iron has 1 degree). They are both supposed to be game improvement irons, so I would assume their bounce numbers would be similar.
Could someone explain why this difference? What kind of player would benefit from one or the other?
I would understand lower bounce numbers in players irons, but in this case both models I mentioned are game improvement irons.
Thanks in advance for your comments