So let's see:
AIEW left the top 50 at week 14. Stonger didn't leave the top 50 until week 30.
AIEW left the top 100 at week 35, and never returned. Stonger is on it's 44th week and has yet to leave the top 100.
Stronger is currently 96k copies ahead of AIEW at the same time frame of 44 weeks.
AIEW ended up selling 949k in the US. Stonger will sell 1 million +.