Very helpful comparison pics , but i have to say that the larger set would be inset into the block, making them look shorter, on say for example RKD's Knee armor, but if you have a set of boba maker knees the Fenix might be ok i guess. When i look at the way i'm constructing my own Knee armor i will not be able to inset the launchers and the Mojo's would be too long. Mojo's are more suitable to most of the Knee armor available, making them more accurate .