@millerak42 @EconomPic @DanielSotiroff @chamath @CliffordAsness That makes sense based on what you described earlier (Better BS,FCF to allow BBs). 
Can you run the same Portfolio Visualizer for an equal weighted buyback etf (SPYB) instead of the invesco achievers(PKW)? 
Comparing results of this vs the EQ WT SP500 would be interesting.