as maybe all of you, I think GF3 is the worst one, but I still like it. It's unfair to compare it with the first two parts. Them both are perfect!
Even so, I really like GF3, specially when I watched it the first time, I loved it. But I also agree that it could have been much better.
these are the main flaws IMO:
- if you watch it without to know the story from the previous movies, you won't know what's going on (thay might not be a flaw to many of you, I know)
- the first two parts have an incredible thing related: since the very beginning, you get to know exactly who is who. In GF3, I took a long time to know the names of all the guys in the story, who they are, and what they are killer for.
- GF1 and 2 are absolutely realistic. GF3 is not. the scene when Vincent kills the 2 punks in the beginning is great, but not very real. and specially, in the final sequence, when that man pretends to be dead and then kills one of the twins, it's very non-GF.
- the (IMO) absolutely unnecessary love affair between Vincent and Mary
- Diane Keaton (IMO again) poor acting.