Guardian or Crusader

I just made my cleric few days ago and now he is at lv 35 in hope that to make myself an invisible guardian *_*. thennn, I heard a lot of stuff, saying that Guardian is SDN oriented, while Crusader is PVP oriented... is it true? and how bout the cons and pros? for both guardian and crusader. Magic Class seems fun too,... but then havin' 1000 str and 2k patk at the moment is really a huge achievement for me, as paladin >_<. sooo what should I do? I meannn should i stop being as guardian and goes for crusader.. since crusader sound so cool... ._.;

Crusader.

i only play dnsea so i suppose i can only give advice on dnsea

atm only dungeon where clerics are essential is sea dragon and you dont need to be a guardian to beat that dungeon considering most of the time, if anything goes minor wrong and members dying (such as disconnect), the guardian/crusader is the last one standing with no real dps ability. dodge well enough and you might be able to even solo it.

although in pvp factor, a lot of people are complaining how tanky a guardian is and how they slowly but surely kills their opponent off while tanking big guns like gearmasters