Ok I'm a tad confused; I see a few unjustifiably bad reviews. First of all you have explicitly informed all players that it is a mobile version so obviously it is unreasonable to expect the standard to be at the highest you see on Newgrounds. Also generally the game needs to be of a simple premice for it to be practical on a mobile device.
After playing your Tie Fighter Assault SE game I can see where you have altered the game to make it applicable for a mobile device. Now a few people have flagged up the graphics. Now Yes they are not amazing but they are practical and something which will improve the more you practice. There are no conflicting colours (something I see too much of, where you can't see what your doing as your character is the same colour as the background). Also I noticed that you had put some special attention into your characters, the small animations (blinking etc.) good touches I like the attenton to detail.
Overall your game is a well designed, simple, addictive and has clearly been crafted well for the mobile game genre. I would love to see a variety of games expanding on your characters (I missed the voice acting in this version :( but understand why it wasn't there). The only main reason I didn't vote a 5 for this is simply because I see potential for expansion: Ship upgrades, more story ( I love stories) More character development and yes graphically.
But good job, I have tried many a time to make a Flash game but could never see it through to the end :P So gratz on making something of this quality :D