well if you just need a small one or two man tent, of course a 10x10 sheet of canvass is much easier to pack than a tent, and if you're out with a buddy who is also carrying one, you've got a bunch of tent right there if you overlap the right way.
However with a baker, you can open up the front and build a fire--SMALL fire--under the "fly" that used to be your front door. Also, if you do it right, you don't even need poles if you run a line between two trees to hold up the front, and stake down the sides. I have a friend who does this when he goes to drive-up camps with trees available.