And what is the battery life towing the weight?
Based on the 30 second "scientific" test it didn't drop much charge for that short tow. But, IIRC, drawing large amounts of power from batteries in a short amount of time is hard on them and shortens the overall life. So maybe not the best choice for daily hard labor.
Other than that, who can tow the most don't mean shit when you try to take that 3-4 ton curb weight monster to the hunting lease in wet red clay.