I would say the only saving grace on the Leupolds is: Weight, eye relief and resale. They have been around since the hills and to some people that is worth a pile. Weaver has changed hands I believe 2 times and they may even have had a small closure.
Leupold had to upgrade their Vari X II line to the VX II to keep up with the competiions offerings.
Weaver has a fast euro adjust eyepiece, semi target turrents (based on their T series adjustment system - superior to Leupold from a point of impact shift comparison), click adjustments.......Leupold has been playing catch up withe VX II and VX III.