PKs and Boss hunts and everything that involves 1vs1 situations will advantage the Blader as his BM2 is specifically focused on such scenarios in Cabal. Two PVE (orange text) skills on Completer and GMaster level(Cabal powerleveling) will mean that the Blader can easily deal tons of damage to mobs thus level very fast. Most of his skills have Knockdown, Critical Rate and Damage bonuses, high +Additional Damage and Amp.
The Blader also has numerous fast skills(cheap cabal alz) and a short stun, but unfortunately they have small AoE and should be used in 1v1 situations (except for the stun which is essential to your survival when growing your character, with crappy gear). Sky-high Defense Rate and Defense gain equal to a Warrior, combined with above average HP and Vampiric will ensure that the Blader stays alive for a looong time, being one of the hardest nuts to crack for mobs.
Intuition will save your life many many times, but it will also cause major frustration. Generally speaking, the Bladers have Active protection against mobs (Intuition which increases flee rate), Active protection against assailants (Instant Immunity which renders you immune to unmovable and stuns and knockdown), Active protection against debuffers (Resist Barrier provides 25% protection against unmovable when Immunity is in cooldown).