We haven't had the ability to test on XBox or PS3.
There was an issue on the Wii that I worked through with the dev team, so we can say that 1.2 runs on the Wii. The issue would likely have effected XBox/PS3 as well, but there may be other problems on those platforms.
I recently received a report of build errors on XBox, but am waiting to hear more details...
IOW, we can't say right now, but we'd very much like to work through any issues with an XBox/PS3 developer interested in using Playmaker...