Some comparisons in weights based on gear I use with a tarp/ bivy combo vs hammock and the seasons.

Tarp Bivy Combo
Spring/ Summer
ULA CDT stripped down size medium 19oz
Borah Bivy with bug protection 6.1oz
Hammock Hear Cuban Hexfly with pull outs 5.8oz
GG Nitlite pad for warmer weather 4.6oz
SOL escape Bivy as a sleeping bag 9oz
X8 TI Shepard hook stakes 1.6oz
Total Weight 46.1oz or 2.8lbs


3 Season Mild Winter
ULA CDT stripped down size medium 19oz
Borah Bivy with bug protection 6.1oz
Hammock Hear Cuban Hexfly with pull outs 5.8oz
Neoair Xlite women's 12oz
Hammock Gear Burro TQ wide/ long 20 degree 20.5oz
X8 TI Shepard hook stakes 1.6oz
Total Weight 65oz or 4.0lbs

Hammock
Spring/ Summer
ULA CDT stripped down size medium 19oz
Dream Hammock Darien UL long with Dutch whoopie hook suspension and tree straps 13.2oz
Hammock Hear Cuban Hexfly with pull outs 5.8oz
Hammock Gear 50 degree 3/4 UQ 11.1oz
Hammock Gear 40 degree Burro long and wide TQ 13.6oz
X5 TI Shepard hook stakes 1oz
Total Weight 63.7oz 3.9lbs

Hammock
3 Season mild winter
ULA CDT stripped down size medium 19oz
Dream Hammock Darien UL long with Dutch whoopie hook suspension and tree straps 13.2oz
Hammock Hear Cuban Hexfly with pull outs 5.8oz
Hammock Gear 15 degree 3/4 UQ 15.1oz
Hammock Gear 20 degree Burro long and wide TQ 20.5oz
X5 TI Shepard hook stakes 1oz
Total Weight 74.6oz or 4.6lbs

Deep Winter
Hammock
Hammock Gear Burro TQ 0 degree quilt 28oz
Hammock Gear 3/4 UQ -10 degree 20.1oz

Tarp Bivy
Hammock Gear Burro TQ 0 degree quilt 28oz
Neoair xlite women's 12oz
GG nitlite pad 4.6oz