Like most big organisations there will be workers who think a particular manager is the bees knees and there will be others who have cause or experience to have a very different opinion. I'd suggest that like any boss, you take them at face value until they've had the chance to get their feet under the table. Once settled, see how how they treat their subordinates. That will go to their character and that will tell you all you need to know.
The other alternative is to see how much Kool-Aid they encourage you to drink and how quickly!
