"My advice is to not play ladder to compete but for the ladder only items and stuff."
This pretty much sums up the answer to everything. And no, not everyone has pickit or maphack.
If you are one of the losers who does then kindly keep it to yourself and be content or something. No one is forcing you to play with the people/bots you describe. Find some friends and play legit - there are certainly legit players on bnet.