The SPCC is optimized for speed, at the expense of some potential for bias. If some amount of bias is believed to have occured, a protocol can escalate their claim above the authority of the SPCC, and put it in the hands of the UMA Optimistic Oracle. The UMA OO is a slower process but the claim decision is made by tens of thousands of UMA tokenholders who, as a whole, are probably not biased towards Sherlock or the protocol submitting the claim.