Which Should You Pick?
If you like playing solo
CH — with your own buffs/heals you survive anywhere alone.
If you like party play
EU — with the right composition (Warrior+Cleric+Bard+Wizard) grinding speed is unmatched.
If you are PvP focused
Both are strong: CH shines with burst and sustain, EU with Warlock/Wizard combos.
If it's your first time
CH Blade or EU Warrior — both are forgiving, hard-to-kill starts.
On SeaSRO both races play with original Joymax values: no skill has been buffed or nerfed.