You couldn't, because it wasn't. The first half of the movie was obviously shot for shot, but if the second half of the movie made it pretty clear things are going to be different.
On one hand as an Eva fan I know I'll go see the new movies no matter what, on the other hand it's really really lame they're remaking the same poo. Anno has had two chances to make this series, he doesn't need a third. They should be spending this money on something else.