A stock tire (235, 245, 30x9.50) will weigh about 35lbs- 40lbs.
A 33x13.50R15 Toyo Open Country MT weighs 75lbs.
Just the tire alone is 30lb to 35lb heavier than stock. Add that to a steel wheel that's 10lbs heavier and your adding 45lbs per tire/wheel.
Using your 2:1 ratio, that's equivalent to adding 340lb (385lbs if you include the spare) to an under powered and under geared Jeep that has the aerodynamics of a brick.
That's nearly 400lbs of additional weight and you haven't even started adding a front bumper, Winch, rear bumper/tire carrier, body armor, skid plate or any gear.
A BFG KM2 33x12.50R15 weighs 59lbs.
Using the KM2 with an aluminum wheel will only weigh 19lbs - 24lbs more than the stock wheel/tire.
Using your 2:1 ratio, The BFG KM2/aluminum wheel set is equivalent to adding 152lbs (171lbs) instead of 340lb (385lbs ). (I Hate KM2's, but they are a lighter tire and the weights are listed)
That's a weight savings of 188lbs - 214lbs.... Take the weight into consideration when buying the rest of the bumpers, armor, and parts and you could easily see a difference of 500+ pounds. That seems worth considering to me especially when you can reduce that much weight with just the tires/wheels.
You can base your opinion on hypothetical worlds where real world numbers and real world variables aren't included if you wish, but there is much more to consider.
The first straw never breaks the camels back.
2014 Wrangler JKU
2013 Wrangler JK
2004 Wrangler TJ on LEAFS
2001 Dodge Ram 2500