You can tell straight off the bat it's the unreal engine. Everything is big and chunky, and has that sort of dull shiny look to it. It's probably the easiest engine to spot in it's current iteration, with so many horrible looking games using it, and so few finding beauty in the ugliness.
The vegetation looks fantastic, and the weather effects are superb. Once this goes into the hands of developers though, I predict a lot more games that look very similiar to each other, and very few that truly stand out, unless the tools have become much easier to use, or developers have a better understanding of the engine by this stage.








