I just looked up the Eureka Spitfire 1 on their website: "Minimum weight" is 2 pounds, 12 oz. (44 oz.). I couldn't find a definition of "minimum weight" on their website, but the general definition is without stakes and without the stuff sack. For some companies, "minimum weight" also excludes poles and guylines. (Let the buyer beware!)

The Alps Zephyr 1 is even heavier, 3 lbs., 10 oz. (58 oz.) for tent and fly weight--which definitely omits poles, stakes, stuff sack and probably guylines.

Your Tarptent Cloudburst 2 weighs 38 oz., stakes, poles, guylines and stuffsack included. Maybe 39 oz. after seam sealing.

Save your money and your back/knees/feet and use the Cloudburst you already have! You'll enjoy the extra space, too!