Personally, I think this is getting blown out of proportion. Firstly, it doesn't look fake, not at all. I think most of us can agree with that. The X-Wing stops dead in its tracks because it just met a blast from a Star Destroyer head-on. Vaporized - instantly.

Secondly, Who says this scene has to be a 100% victory for the rebels. How was it ever a victory anyways? They are getting their asses kicked down on Hoth, and are forced to escape before their base is completely obliterated. That doesn't sound much like a victory to me. They are escaping by the skin of their teeth. That's not a victory - it's a desparate emergency exodus. The whole film is dark, including the Battle of Hoth. It seems much more believable and exciting to me now that Star Destroyers literally fire on the escaping ships.

This is war after all. Did the fact that X-Wings and Y-Wings got destroyed during the Trench run in A New Hope take away from the Victory of the Death Star getting destroyed?