As stated before, if the images were right next to one another it would be easier to compare.
(pic)(pic)
Instead of...
(pic)
(pic)
All we really have to do is press F11, and it will be easy to do so though. ODST and Reach seem really similar in many ways, but Reach seems like it's a little nicer.
look at them both in full size and compare. in my opinion i think you could've picked a better picture than that especially since i think it was from the beta