I have never used Pings.
How good would the pros who have won with Pings have played had they used a Mizuno blade?
Tom Wishon had an interesting study a while back that indicated the difficulty in distance control with game improvement irons. When hitting the middle of the clubface the blades were far superior to game improvement irons in giving a player the distance expected. Meaning that with a game improvement iron you can hit the middle of the clubface, but you will not know how far the ball will fly nearly as well as you would with a blade.
Hybrids have nothing to do with irons. Read my post again. I classify the hybrid with woods.