Median bias vs. injected L _wh at T = 300 K, split by host SED family. Positive bias at low L _wh is the expected behavior of a cap estimator in the presence of nondetections (floor at ≈kσ) and unsubtracted host MIR continuum. The three SED families converge toward small bias at high L _wh. As expected, the bias is largest for SB at the faint end (strongest MIR continuum) and decreases toward small values at high L _wh, where the cap floor is negligible relative to the injected signal.