SUE and Relative Strength

relative strength should be every year independently right…not cumulatively…is this not so?

But the question did not mention anythig about the benchmark used for relative strength. It could be stock’s own past prices or market return. If these numbers are based on stocks own past prices, we can’t say it outperformed or underperformed raletive to the market index. CFA books says there are two benchmarks. I am not sure though.