I did some math on negation modules, and I came across this, taking into account no shield researches have been made:
4 Eos III shields block 280 damage (70 each)
Sagans III:
Kinetic 45 (All)+155
Heat 50 (All)+150
Magnetic 45 (All)+160
Explosive 50 (All)+145
Added together:
Kinetic: 190+155 (345)
Heat: 190+150 (340)
Magnetic: 190+160 (350)
Explosive: 190+145 (335)
Impressive, huh?
But wait, there's more monster math!
4 Jack-O-Lanterns III block 560 damage (140 each)
Tysons III:
Kinetic 65 (All)+190
Heat 70 (All)+185
Magnetic 65 (All)+190
Explosive 70 (All)+185
All 4 together: Kinetic: 270+190 (460) Heat: 270+185 (455) Magnetic: 270+190 (460) Explosive: 270+185 (455)
Final thoughts: Never use Tysons, stick with Pumpkins until you can unlock Twilight/Zeroth.