What do you mean by "fair"?
Acquittal rates are certainly higher in Crown court Trials where a jury is the sole arbiter of the facts of the case.
But this may well mean that people who are actually guilty are more likely to get an acquittal at a Crown court. Is that "fair"? If it is "fair" then who to? Certainly not Society.
What would be fair is that all guilty people are convicted, and all not guilty people are acquitted, no matter where the trial takes place. But that is never going to happen.