There is very little comparison between the AQI silver deposit and MAG Silver's holdings.
1. MAG Silver deposit is much higher grade. AQI's Navidad is ok but at least a 5 times lower ore value per tonne.
2. MAG Silver deposit is in a mining friendly region with established silver mines in the hood. AQI is in a country that has banned open pit mining and recently had a 3 year moritorium on mining in the hood.
Navidad is a huge deposit and is probably the best undeveloped deposit left in terms of size. MAG Silver's deposit is the best in terms of ore grade.
MAG Silver's has to figure out how to live with its big buddy in its hood.