Indy1986 said:
why is star wars episode 1-3 and kingdom not as strong as the others (i am not referring to the plot of indy4)
That I can't answer because it's all a matter of opinion and personal taste. Either you like a movie, or you don't. And everyone has their reasons and more importantly, their theories. It's not enough to simply dislike a film. We have to rationalize it. And I admit I'm no different.
With me, the Star Wars movies work like this. Due to technical limitations in the original trilogy, Lucas and friends were forced to focus more on the characters, and this was all for the better. Flash-forward to 1999, the eve of the new millennium, and Lucas has got all this technology at his disposal he didn't have a decade or so ago, so he goes hog-wild with it in the three new movies, placing emphasis on the action rather than the characters, because he's a big kid at heart and just wants to do cool action scenes.
There's a lot of this in Crystal Skull, but thankfully not as much. With the Star Wars prequels, Lucas had total creative control so he was basically God, but with the fourth Indiana Jones film, it was a collaborative effort so it would appear as if Spielberg did his best to reign Lucas in. He didn't entirely succeed, obviously, which is why we get stuff like Tarzan-swinging and swordfighting on top of moving vehicles, but overall the movie makes a genuine effort to be about more than just the action. Like Spielberg with Lucas, it fell a little short of the mark, but came close enough that I enjoyed it and I accept it as an Indiana Jones movie.