Jax as it stands now ....
Illusionist CC far superior over Coercer CC
Vlast majority of encounters in the end-game are "pack" encounters that consist from 2+ mobs. Illusionist have 2 great spells for that case - Color Shower - its AE Rain spell in sence it give 4 wave X135 damage per wave per mob. In a sence you do ~520 damage per mob if you have average raid encounter we are talking about at very least 2K damage per cast. On top of it you have AE that do ~350 per target every 12 second - that's your primary attack toss here Scorching Beam 350DD + around 100-200 (?) afterward dot
Coercer have naturally 2 nukes line Tyrranical Mind (if you have 2 coercer on raid only 1 can cast this spell they not stack...) that hit relaible at Adept 3 in mid 500s with 9 second recast and Seizure that hit every 2 second in low 200s but cost as much power as our big nuke. Combined damage, recast timer and power cost of our DoTs make em useless in comparisson to our DD
Simply and blant say now coercer useless DPS wise during raid enviroment ....
Untility what debuffs you are talking about? The only worth while debuff that coercer have (and it not work properly because it dont stack with other classes debuffs) - is broadband resistance debuff (~1100-1500 at lvl 50 at Adept 1)
But all in all - I'd give everything to Illusionist for 1 and only 1 thing - powerfull charm. I dont want to be manawhore, I dont want to be buff/debuff monkey - that was not a reason I made coercer in a first hand. I wanted CHARM. SoE fixed many problem with Biguile few more remain. If my beguile will work on full power I wont give a danm about every other skill