Do lower level spells get resisted more often?

[garfo]

50 Shaman here -- was recently debating with a groupmate about using lower level slows to save mana. However, nothing wastes mana more than when slows get resisted. (as in, I'd rather spend 50 extra mana on the higher level slow if it's more likely to land).

So: will a level 50 mob, for instance, be more likely to resist a level 29 slow than a level 39 slow? Or *any* lower level spell for that matter? A level 5 nuke vs a level 49 nuke?

Has this been tested by any EQ scientists out there?