I don' t know about all the testing and bias but I know I was bias when I tested my Sims aganist the Stealth. I wanted the best stablizer on my bow I could get. The modular Sims is good but compared to others I have shot it is average and a 50.00 stablizer shouldn' t be average. I also had to Loctite the sections to keep them from getting loose every 10 shots. My 11 year old loves the Sims on his Parker but I won' t let him shoot my Stealth for fear of having to order another one. Don