Woody and Buzz were too incompetent (weak/pathetic, however you want to put it)
While Bo-Peep was way too hyper competent. If you notice they were setting this up right in the opening scene. Like Woody could not lead a rescue his own; basically they specifically go out of their way to increase Bo's competence and make Woody look like an idiot 'you never told me they had names', yeah right they were together for 10 years at that point and he didn't know the sheep had names. They show Bo and Woody come up withe plan right away at the same time; not letting Woody be the one to make the decision. Even her first line of dialogue, "situation?" was way too formal and almost military like. This is nothing like the Bo-Peep of the 1st 2 films.
Now if they wanted Bo to be demonstrate an increase in competence after being a lost toy for many years and Woody being more impressed with her new confidence and abilities that would be fine (and would make sense given her need to learn to survive); but they should have shown her as more like her toy story 1 counterpart in that opening scene and it should not have come at the expense of Woody and Buzz being almost useless idiots when next to her. Why is it that the male characters have to be torn down? Is it not enough to present women as equals; they have to go out of the way to belittle the male characters to create extra contrast? I find this distasteful, and I hate the message it gives to my children (boy and girl).