Blades curve the ball easier than high-MOI irons
The instructor says an advantage of a muscle back is workability: a super high-MOI game improvement club actually becomes harder to curve the ball with. A golfer who likes to fade into a right pin, hit a draw into a left pin, or flight it will find that easier to do with a smaller muscle-back-style iron.
Channel: Club Champion
Watch official source at 12:37Why this context matters
About workability of a muscle back versus a high-MOI game improvement iron.