No. It's too small, the wrong shape and the wrong configuration. The gliding as seen in the film would never, ever work, and frankly I hate it and think it looks utterly fake. It looks like a man sliding along a wire while holding out his cape which flutters a bit in the wind, which is exactly what it is. It doesn't look like it's actually supporting him in the air at all - except in the CG shots where at least it looks like it's catching a lot of air.
Anything that would really allow Batman to glide would look a lot different and be a lot more cumbersome or complex.
Simply having Batman's body parallel to the "wings" wouldn't help either - there's a reason hang-glider pilots hang several feet below the wings, and it's for stability. They don't have the glider strapped straight to their back.