The differences in abstraction.
The reasons for dropping down to the embodied root.
The similarities between Social Presencing Theatre and Systemic Constellations. How the changes may make for an easier entry point for Service Designers and social change agents, and tie it into the Theory U, but there seems little difference.
From an InFusion space and Infusion Lab perspective. The key factor that we address is the nature of where people are coming from. So the transition into a flexible space, (which in theoryU is the bottom of the U) is different for different fields of practice, and for different spaces and places, purposes and group size being dealt with. It also varies on the level at which people are jumping off from (or transitioning from / transporting from / rising up from / crossing the threshold from. etc)