DJ, these are very different. The one you have is a lot thinner than the Aussie TMX one. I have several of these thin ones and use them for baking all the time. I also have a TMX mat and a French one. I don't use the TMX ones in the oven, although I know you can. The TMX mat is the one I use always to make bread and scones on. You cannot cut on it with a knife, must use plastic.
The thin silicon Magic sheets are great and I cut them to size to fit favourite baking dishes. Even cut one to fit into my Bread Machine bucket. Hope this helps.