Off the top of your head do you know if that +80HP crosses the extra shot threshhold? That is what really matters in that case. If you don't I suppose it won't matter too much. 11 shots vs 12 or whatever. If your heavy TD is 1 shot from death you're probably gonna lose it regardless.
New JT will survive 1 extra shot from an AEC and Anti-Tank Overwatch. Everything else appears to be the same number of shots to kill:
ISU (240 dmg) - 4.6 shots for JT / 4.5 for Ele
Jackson/Firefly (200 dmg) - 5.6 shots for JT / 5.2 for Ele
SU-85, IS2, Medium tanks, IL-2 Rockets, and AT guns (160 dmg) - 7 shots for JT / 6.5 for Ele
AEC (120 Dmg) - 9.3 for JT / 8.6
Soviet AT Overwatch (60 dmg) - 18.6 shots for JT / 17.3 for Ele