I read that some guy used Daedric Tomb against DK's to some success. So I decided to test it in pvp even though the cost seemed extremely high. I run full light armor and sharpened weapon, so my spells ignore all enemy spell resists.

However I was getting some really low hits on enemies.

I went and tested it in a controlled setting. Spell delve 291.

Against 1320 spell resist I was hitting for 254.

Against 1745 spell resist I was hitting for 234.

Against 2237 spell resist I was hitting for 212.



Can anyone explain why this particular spell is not affected by my spell penetration, when every other spell I use is?

I suppose one answer could be that it is going against armor mitigation. The guy I tested on used immovable to buff his resists, so he buffed armor at the same time. However if thats the case it still makes it subpar compared to other spells that ignore all resists...