7700 is for the diesel. The turbo gasser is only rated to 7000 lbs but adjusted for a safety factor of 20%, is only 5,500 lbs. And diesel or not, I definitely wouldn't tow anything over maybe 5,000 lbs with that chassis. Which means you're not towing much of anything.
By comparison my towing capacity is 12,500 lbs, adjusted down to 10,000 for my 20% safety factor. My RV trailer wet and loaded is around 8,500-9,000 lbs.
Definitely not sporty.