Yes, they changed it in c4. As to why they did so we can only guess. Therefore my guess (along with my clan's SK) is that it was considered overpowered when it would both damage for a good amount AND paralyze at the same time. Now it's one or the other and not both. To me it makes sense and tbh you should be happy it can still para white players on chance since it still counts as an attack and not a debuff regardless of it's affect when it hits.
its a bumb idea for pvp now in mass pvp when theay get purafied you did nothing to them before yopu at least took a good chunk of cp tho it does let us go greef low lvl bots easy if we feal like liveing on the edege :)