Dota 1: 150 centre-collision

Slow aura:
Spoiler: 

[A0HY]
code=AOae
checkDep=1
levels=4
reqLevel=1
targs1=air,enemies,ground,invulnerable,self,vulner able
Area1=150
DataA1=-0.05
BuffID1=B03W
targs2=air,enemies,ground,invulnerable,self,vulner able
Area2=150
DataA2=-0.09
BuffID2=B03W
targs3=air,enemies,ground,invulnerable,self,vulner able
Area3=150
DataA3=-0.14
BuffID3=B03W
targs4=air,enemies,ground,invulnerable,self,vulner able
Area4=150
DataA4=-0.18
BuffID4=B03W
Art=ReplaceableTextures\CommandButtons\BTNAbility_ Spectral_Dagger.blp
Buttonpos=2,2
Targetart=
Researchart=ReplaceableTextures\CommandButtons\BTN Ability_Spectral_Dagger.blp
Researchbuttonpos=2,0
Targetattach=origin
Name="Spectral Dagger"
Tip="","",""
Ubertip="","",""
Researchtip=""
Researchubertip=""
Researchhotkey=E


Speed aura:
Spoiler: 

[A0I2]
code=AOae
checkDep=1
levels=4
reqLevel=1
targs1=air,ground,hero,invulnerable,player,self,vu lnerable
Area1=150
DataA1=0.05
BuffID1=B047
targs2=air,ground,hero,invulnerable,player,self,vu lnerable
Area2=150
DataA2=0.09
BuffID2=B047
targs3=air,ground,hero,invulnerable,player,self,vu lnerable
Area3=150
DataA3=0.14
BuffID3=B047
targs4=air,ground,hero,invulnerable,player,self,vu lnerable
Area4=150
DataA4=0.18
BuffID4=B047
Art=ReplaceableTextures\CommandButtons\BTNAbility_ Spectral_Dagger.blp
Buttonpos=2,2
Targetart=
Researchart=ReplaceableTextures\CommandButtons\BTN Ability_Spectral_Dagger.blp
Researchbuttonpos=2,0
Targetattach=origin
Name="Spectral Dagger"
Tip="","",""
Ubertip="","",""
Researchtip=""
Researchubertip=""
Researchhotkey=E


Limit is 174




Dota 2: 175 center-collision

Spoiler: 

// Spectre: Spectral Dagger
//================================================== ================================================== =============
"spectre_spectral_dagger"
{
// General
//-------------------------------------------------------------------------------------------------------------
"ID" "5334" // unique ID number for this ability. Do not change this once established or it will invalidate collected stats.
"AbilityBehavior" "DOTA_ABILITY_BEHAVIOR_POINT | DOTA_ABILITY_BEHAVIOR_UNIT_TARGET"
"AbilityUnitTargetTeam" "DOTA_UNIT_TARGET_TEAM_ENEMY"
"AbilityUnitTargetType" "DOTA_UNIT_TARGET_HERO"
"AbilityUnitTargetFlags" "DOTA_UNIT_TARGET_FLAG_MAGIC_IMMUNE_ENEMIES"
"AbilityUnitDamageType" "DAMAGE_TYPE_MAGICAL"

// Casting
//-------------------------------------------------------------------------------------------------------------
"AbilityCastRange" "2000 2000 2000 2000"
"AbilityCastPoint" "0.3 0.3 0.3 0.3"

// Time
//-------------------------------------------------------------------------------------------------------------
"AbilityCooldown" "16.0 16.0 16.0 16.0"

// Cost
//-------------------------------------------------------------------------------------------------------------
"AbilityManaCost" "130 140 150 160"

// Stats
//-------------------------------------------------------------------------------------------------------------
"AbilityModifierSupportValue" "0.0" // Modifier has no support value

// Special
//-------------------------------------------------------------------------------------------------------------
"AbilitySpecial"
{
"01"
{
"var_type" "FIELD_INTEGER"
"damage" "50 100 150 200"
}
"02"
{
"var_type" "FIELD_INTEGER"
"bonus_movespeed" "5 9 14 18"
}
"03"
{
"var_type" "FIELD_FLOAT"
"dagger_path_duration" "12.0 12.0 12.0 12.0"
}
"04"
{
"var_type" "FIELD_FLOAT"
"hero_path_duration" "7.0 7.0 7.0 7.0"
}
"05"
{
"var_type" "FIELD_FLOAT"
"buff_persistence" "4.0 4.0 4.0 4.0"
}
"08"
{
"var_type" "FIELD_INTEGER"
"dagger_radius" "125 125 125 125"
}
"09"
{
"var_type" "FIELD_INTEGER"
"path_radius" "175 175 175 175"

}
"10"
{
"var_type" "FIELD_INTEGER"
"vision_radius" "200"
}
"11"
{
"var_type" "FIELD_INTEGER"
"speed" "857 857 857 857"
}
"12"
{
"var_type" "FIELD_FLOAT"
"dagger_grace_period" "2.0"
}
}
}


I can't quite find the point from whose slow are applied (looks like complete random) but the limit seems to be around 199.


There is also differences in invulnerable units interaction. In dota 2 it completely does not work on them while in dota 1 it does,