Paralyze vs Stellar Cascades

[samoht]

Vanilla Dominions

Paralyze is a level 4 Thaum spell, AoE 1 person, does 60+ points of AN damage and paralyzation.

Stellar cascades is a level 5 Evo, AoE5, 25AP stun damage.

Both require S2 to cast.

Questions:

1) Is there an effective difference between stun and paralyze?

2) Assuming enough research had been done where both would be reached at the same time, which would you pick? What situations is one better than the other?