A lot of times, laddered or not laddered, people don't really work in a team or act as one.  I'll give you three examples.  
1. Laddered, Hourglass.  We had already destroyes 1-2 buildings (forgot which) but somehow we lost our AGT, then pretty much most of the rest.  IT IS NOT POSSIBLE UNLESS WE DIDN'T WORK AS A TEAM!  Also, people were rushing into enemy base with a mammoth tank, GETTING OUT and doing something.   idiots
 idiots2. Nonladdered, Fields.  I had a plan, they don't listen.  They just rush in with infantry at the back entrance with no team (cause some times the back-infantry-rush work if there is a large amount of people) and refuse to defend the base.
3.Nonladdered, Under.  People prefer to rush with a APC, but didn't get more ppl OR buy a hotwire/technician.  During that time, we won, but we could have done it wihtin a shorter time.  All we needed to do was pound ALL our Guneer rocket launchers (grenades CAN do, but weaker) into the power plant via the back entrance.