because he used levels from the original game, that only lets you draw rectangles and lines, which don't stick....making that 2 platform one in the preview image a bit of a bitch to solve.
hopefuly he makes up some creative levels for this one, but then again, being able to draw anything might make any puzzle too simple.
It's easy because the whole physics game idea is still kind of new. Wait about 10 years and all the physics games will involve you drawing combustion engines and nuclear reactors.