You question a lot of her tactics, but Adama himself said "From a tactical perspective, it is hard to find fault with anything Cain did" at the end of Razor. Maybe her decision to attack was the correct tactical decision in the context of that universe. Lots of people on Pegasus say they owe their lives to her, she probably made some good decisions off screen. Kara says the fleet is less safe without her and Adama thinks highly of her tactics.
The decision to attack wasn't a tactical decision at all.
The decision to attack was a strategic decision, and it was a shitty one.
All of her tactical decisions were sound. But tactics don't win wars. Strategy and logistics do. Strategically, her decisions were utter crap.