Yep, instead of being tighter and more focused (code words for repetitive) Gears 2 uses weak plot elements to string together a large variety of gameplay dynamics to keep the gameplay unrepetitive. I will take fresh gameplay with a lame story over a solid story with poor repetitive gameplay anyday.
But then again I don't play many games for stories (because almost all of them stink, are cliche, and poorly executed). But that is my take on the game story genre. Horde is a good example of excellent gameplay with really, really bad "story telling." I think more games would benefit from not bowing to the concept of story and leave the story stuff to games that do it well.
Except for all the "un repetitive" gameplay is the worst.
Whereas for my dollar what Gears does well is on foot firefights. Those are the fun parts of the game.
There's never been a fun vehicle section in an FPS yet imo, and Gears 2 wasnt the first. They are simply "tolerable".