I've been ready some posts, including the one about possession being overpowerful. Still, what makes these powers equal (assuming they are) ??

What does Materialization has over Possession ?? And similarly, what Possession has over Materialization ??

Answering these questions will help me decide between a standard or a possesion based tradition. Tx in advance.

Quick answer? Materialization is a great way to be physically in one place one minute, and physically in another the next. Possession is a great way to cheaply have a very powerful for uniquely useful body. Gets more complicated after that, but I'veseen it played effectively both ways. Depends on what you're looking for in a PC/NPC.