In BSP, the degree of a planet is more critical than the sign it occupies in some contexts. A planet at 29 degrees is treated very differently from a planet at 1 degree. BSP categorizes planets based on their speed:
Here’s a well-structured, insightful post about techniques and why they’re considered “good” by many astrologers. bhrigu saral paddhati techniques
4.2. Graha Bala (Simplified)