The set designs in the movie are better.
The score is better (not saying Joel Goldsmith is in any way bad.)
The fact that people don't all speak English is enormously better.
The Von Daenikenite crap is still in the series. What doesn't quite kill a two hour movie of course would have destroyed a ten year TV series if taken seriously, so the series' turn toward comedy was a godsend.
The people revolting (and saving the soldiers) is still a notable exception to the dismissal of ordinary people, especially foreign ones.