Parappas level 1 can be tough but is not as ineffective as it seems. It should be used primarily defensively. I've taken out a few Kratos players with it when they've rushed me, but chasing someone down with it and trying to use it doesn't work as well.
best to use it after ur gettin in close combat, just block or evade an attack, mostly against those kratos players or radic using his sniper on close distance, while theyre are on cooldown you can easily pick them up, couse they cant do sth in that time.
Its one of the fastest lvl 1's i've seen so far, even if it has the lowest reach.