I'm not sure I'd characterize any of the figures as "a super high chance of getting out of it", unless you mean leaving in handcuffs. Bear in mind that defendants that plead not-guilty but are then found guilty at trial get a worse penalty than if they had pleaded guilty in the first place. The federal sentencing guidelines intentionally recognize that people who plead guilty are taking some responsibility for their crime, and so it shaves a few months off.

Defense attorneys are supposed to help a defendant weigh the bird in hand (a plea deal with the prosecutors) against the two birds in the bush (prospect of acquittal at trial). And that's only if the prosecutor wants to even do a deal: they don't have to, since sometimes justice cannot be served by anything less than a jury verdict. Other times, a lack of a plea deal is part of looking "tough on crime" or to set an example.