The truth is that Storm has been buffed overall. Forcefield, Obelisk energy charge and Smartcast,anti-grav, the HTīs own Temporal rift(last we heard itīs soemwhat like a single target stasis?) and Vortex are just a few examples.
The delay IS a nerf but it doesnīt change how the storm actually works and is applied. Cast the storm where the enemy units will be most of the time within the next seconds anticipating a dodge attempt. Dodging though has been buffed, fast units and a good player can negate Stormdamage completely. The idea isnīt "lots of damage (thats Scarabs)" but "force the enemy to move".
Even in SC:BW Storm was on itīs own just ineffective, people are too good at dodging and HTīs to expensive to storm enough to compensate damagewise (I again remind you of the obelisks charge capability).






