I like the second a lot, but I hear your complaints. I was definitely a little disappointed about the space battles - that was the number one thing I'd been looking forward to. Not only are they pretty easy, but it's the SAME BATTLE every time, with two big ships, a couple smaller ships, and a bunch of fighters. I was hoping it would actually be like the battles in the movies, where there are lots of the capital ships on a much bigger scale, moving around and stuff. The only space battles I really like are the Coruscant one from the storyline, and that other one from the prequels where there are a handful of assault ships right up next to each other. The rebellion/Empire battles are dull, even though the dogfighting can be fun.
But the ground levels are awesome, the graphics are much better, the Jedi stuff is very cool, and the different game modes are a nice touch.