Kobalt 24v 1st gen vs Gen 2 brushless impact wrenches

The Kobalt brushless gen 2 mid-torque has more power & faster than the 2016 Kobalt 24v impact wrench. Even my 2016 battery holding charge. It lost 2 bars. The new 2024 still full. Same size 4ah batteries. There isn't any nut or bolt on a car or 1/2 ton truck either impact wrench can't remove. My 1-ton lugs torque spec is about 140ft.lbs. regular cars 85-110ft.lbs but rust & dirty makes it harder later to unloosen.