Most of the time in PVE tracking is useless. The rats have mediocre speed and bad AI so they will activate their mwd to a mere 800 m/s , making your tracking irrelevant as long as you are still. a MJD allows you to position back to a comfortable distance and blap them. so the malus on null is not an issue.
That being said indeed if you want to kill small frigs orbiting you, grappler>web>painter>scripted comptuer > T2 rig>unscripted computer> T1 rig.
now let’s observe a frigate
Angel hunter
http://games.chruker.dk/eve_online/item.php?type_id=10019
ehp ± 800
evasion = ang*40000/sig = 1143
rep 8.5 ehp/s
There is no way you can touch it with a 10tracking turret, even with a shitload of tracking computer.
With a grappler(*15/100) and a web(*0.51 because stacking of grappler) on it, it still has 87 evasion.
With additional painter (/1.4) evasion = 62.
now let’s consider you deal 5k alpha and 1250 DPS with a 8.9 tracking.
The actual ratio of evasion/tracking is thus 7.
with t your tracking, e the evasion of the rat,
hit proba :
h=0.5 ^(e/t)²
damage % applied :
h>0.01 a= (h²+h+0.05)/2
h<=0.01 a=h*0.03
To alpha the rat you need to apply 0.8/5 = 16% of your alpha and to kill it under 10/20s you need 6.4/3.2% of your DPS. To by pass its rep you need 8.5/1250 = 7/1000 apply (ie 0.7%)
reverse :
a=16% , h=22%, e=1.48*t
a=6.4%, h=7.3%, e=2t
a=3.2%, h=1.4%, e=2.5t
a=0.7 h=0.23% e=2.96t
Just to kill the rat under 20s (assuming it does not repair), with a still BS and the rat orbiting you, you need to multiply your tracking by 7/2.5 = 2.8, which is not achievable.Even to break it you still need 7/2.96=2.36 tracking mult.
Basically, it’s not possible to kill this rats, even with grappler+web+painter, if your BS remains still.
you better use your drones, though the grappler may help them.
Pith demolisher
http://games.chruker.dk/eve_online/item.php?type_id=16986 has only an evasion of 20.
let’s consider the previous fit with 10 tracking.
since e/t=2, you already kill it under 10s with no web, no grappler, no painter.
it’s the perfect situation for a tracking enhancer, as it increases your dps against this rat by 37% (the gain in applied dps% is lower for all other situations unless you deal less than 2%applied). That means your tracking enhancer increases at max the applied DPS by 37% vs this specific frigate when it orbits you.
But ONLY when the rat is already orbiting you .
Destroyers and cruiser
des with most evasion are gallente http://games.chruker.dk/eve_online/item.php?type_id=23998
38 evasion, 1k ehp, 8.5 ehp/s
with a 10tracking ship, you apply 0.02% of your DPS. With one grappler you apply 75% of your DPS. with only one T1 rig + tracking enhancer your apply 0.6% of your DPS, it is still not enough to break the rep of the rat…
Now for the cruiser, let’s take http://games.chruker.dk/eve_online/item.php?type_id=24118
evasion is 10.8, 16k ehp, 155 ehp/s
You apply ±40% of your DPS, which goes up by 37% if you fit enhancer+T1 rig (enhancer alone gives +16%applied dps). When the rat orbits your and you are still. grappler gives +150% applied DPS.
Conclusion
In all those cases where you are standing still and ships orbit you, the tracking helps less than a grappler. Considering how easy it is to avoid this situation( mjd, mwd, shooting pointer first) the gain of tracking mods for marauders in pve is very low (IMO worth nothing).
