Because they gave you imunity to roots and snares with 30% speed increase ... meaning you can escape unwanted 1v1 and keep doing your job if possible...
They gave you 2x tech override with 1:30CD (it was 2:00), agai varrious options ... tech override > 2x Grav round or 2x Heal or Plasma + stun or xxx combinations... + hold the line to move away...
They have you remoded adrenalin rush that heals more!
They gave you electro net that literaly owns mauraders or jugs that want to fallow you and it can't be cleansed or breaked...
I hope you're getting the wider picture now...
If you can't combine this into a sucsessful pvp I encourage you to practice because its still a decent class.
P.S. You don't need massive volley radius anyway to DPS. Its crowd control skill so you release pressure on certain points, interrupt, finish off few low health grouped people... etc...
P.P.S. Stockstrike root > Stockstrike knockback... because when you push maurader off your self he comes back, if you root him you can get your distance and do some damage!...
Yes it felt nicer to push people off with it when you'd already use knockback but this is way more usefull!