As a T2i user, I tend to wonder at times if the newer (and of course, more expensive) camera would do a better job? This video review is pretty good and fair comparison showing the pros and cons and similarity of these 2 Canon DSLR camera (in terms of Video shooting). I find it very useful. I hope you do as well. Remember, camera is just a tool. It's how you use it creatively that would deliver a great result for your production.
The full review can be found here.