There is a thread in bladers section that shows that bladers can do very high dmg with just normal attacks so:
before pvp buff yourself with +400 dmg and 25% amp
-start pvp use field of fear on him and the ammout of damage you will deal with normal attack should be high enough to win;
also before pvp dont forget to use the buff that give s 100% protection from stuns etc.(forgot its name) so you wont get knockeddown or stunned by his debuff
another option is to, at the beginning of pvp use fade and then bm2 while you still have mana

and with the buffs you have a sure win with normal attack

- imo if they use their OP buff then it gives us the right to use BM2 witch is not as powerfull as the FB debuff...
I didnt try these tactics yet

im bored in my job and i jst made this up, however ill test it when ill get home - that might be the only way to win with mana sucking FB's