I just wanted to notice that good blademaster can't be restricted just to aps - bm is very versatile class and basing on the attack speed only wouldn't make the bm as effective as he could be. There are many situations when bm is better off using different weapon types.
When it comes to your question, good bm that knows how to effectively use all the weapons is in my opinion the most useful for squad in both pvp or pve.