Do spells of the same line create the same aggro regardless of the level of spell or revisit immunity? Will the lvl 4 necro snare create the same aggro as the high end version? If a mob is immune to run speed changes does this still generate aggro at the same rate? If a mob resist a spell does it still generate aggro at the same rate?
Others have told me that resisted spells agro the same. With that said, I swear that my SK AC taps do less agro when resisted. When resisted on a belly caster its definitely not what it would have been if in range. With SK taps, the lvl 39 shadow vortex should give the same agro as the higher lvl versions. But, this is a function of the AC debuff itself. SK snare seems to be the same at all levels in terms of agro, so fastest cast is typically best for SK's, unless you actually want the mob to not run.
When you are outside of melee range on a belly coaster you generate basically no agro unless it is a unresistable spell