Fire Trap

If we take perfect searing touch now, it gives 90% increased and roughly 25% more damage. Plus, from passives we get 200-220% increased damage from passives for spells/elemental/fire/area. Plus we get, lets say 162% increased damage more from gear/quality on gems.
We assume average average non-fire resist opponent (25% resistance) with us having fire pene gem (49%).
So in total we (rounding) got 30% less from nerf (nerf to damage + nerf to scaling from +2 levels) and got 16% more INCREASED DAMAGE total, plus a 5-9 (7% average) more damage from penetration on trap. 0.7*1.16*1.07 = 0.86 eg 13% nerf on pure damage of a fire trap. AND WE STILL HAVE TO SPEND MORE SKILL POINTS TO GET THIS DAMAGE.
So its 11% nerf to ignite damage (i assume penetration for trap does not work for chance to ignite burning) and around 7% more burning ground damage.

Now the question I ask is:
We get around 100% increased trap damage for around 20 skill points, and 168% for around 35+ skill points. For 20 skill points it is possible to get: around 350% increased crit rate and around 100% increased crit damage. if we assume we had 6.5% crit rate and 150% crit damage total before, for that we get 19% crit rate and 300% crit damage total. That is over 30% possible more direct damage overall (i know, crits are based on luck and 19% is waay too low). Trap nodes we take give us just 20%, but stable.
But what if we now switch our damage gear for crit gear? Say maligaros (we trade 50% increased spell damage for by 2.5% increased crit rate and and 75% increased crit damage total), rings and amulet (say we had 22% fire on each, and we got 2x crit rate (2x30% = 60% increased = 3% crit rate) rings and an amu (lets say 25% = 1.25% and 50% global crit damage) with just 11% fire damage on each). We lost 142% fire damage (not like anyone will ever get 3x accessories with 22% fire and 26% spell on amu) and got + 6.25% crit rate and +150% total critical damage.
Recalculating
New total damage increase is 90+20+210 = 320% (down from 452%), and the trap nodes would increase it by (1+3.2+1)(1+3.2)= 24% increase (4% more).
If in same situation we get crit passives instead: 25.25% crit rate and 450% crit damage total. That is already over 80% increase over trap passives now. But lets find out how much we lost on losing 122% increased.
With trap nodes we lost 19% on base damage.
With crit nodes we lost 23% on base damage.
LEts see whats here.
If we dont take trap or crit nodes and our gear is perfect damage one. Lets make it have base of 1 efficiency.
So its effectiveness total would be 1.03 (with its crit rate and damage)
Trap nodes would increase it to 1.236.
Crit nodes would increase it to 1.34.
We change gear to very very medium crit rate one.
With traps we lose 19% base. new base is 0.81.
With trap nodes and new crit = 1.048. A huge loss.
With crit nodes we are now 0.77 base.
With crit nodes out new efficiency is 1.44. A good increase.