I don't have any concrete numbers or scientific data, but just from playing with the bladez and the 71 Nike for the past few weeks, IMO, the 7 iron in the bladez is effed. I actually wanted to write a post saying that i thought my 7i was broken and could they please fix it. I have had occasions with almost full to full bs with that 7i, rated at 160, in very little wind or even with wind at my back, fly only 147 yards, very little or no incline as well. We are talking about a shot that should easily go 155 and it goes 147. I can hit the ball 147 with those Nikes with my 8i rated at 145 by not using full backspin.
I think most of the irons sets have a club in them that is peculiar to say the least. I think i have seen many a post about the 8i in the R11 set and how a lot of the players cringe when they land at a yardage that they have to pull that club out. I beleve my frined told me on a missed ding you can lose 8 yards on that club(don't know the exact distance for sure). To lose 8 yards on 8i is huge. Well i believe the 7i in the Rbladez set is similiar. All of my irons go pretty close to the calculated distance that i come up with, but not that one.
Like i said i don't have concrete numbers its just my feeling. Another thing to think about is the clubs have rated distance, but that doesn't mean that they are right. Its just a guide. Maybe that club isn't rated at 160 but more like 155. I understand you aren't commenting on that per say, but more to that fact the results are so varied. So i will go back to my original statement. I think the 7i in the Rbladez is effed. I hate when i come up with a distance between 150 and 160 and have to pull that club out. Think I will be learning a 6i punch shot or an 8i full top spin shot a lot better. I
Its almost like the club has no use really, in fact can i trade my 7i in for another wedge. I think if i could figure out how to skull the ball on this game I could buy the 115 cleveland wedge and probably skull it and get it to go 155-160 better and who knows with those clevelands and there crazy back spin I might be able to get the ball to skip across the fairway and green then come to a dead stop