@supernova7005: First of all they can't.
Only the thrown version of Gae Bolg, the one focusing on more destructive power and range, can be blocked. The non thrown Gae Bolg can't be blocked by any kind of shield and only if you have extreme levels of luck or casualty manipulation can save you.
Kamui would work, tsukuyomi would be laughed at and amaterasu can't burn cloths and trees lol.
And they are not faster, mach 20 is tops for them, Gil on the other hand has mach 45 going for him.
@Dream: Got it wrong there Dream, only thrown anti-army version can be blocked by shields, that was the whole point of Archer provoking him, to make him use the more destructive one so it can be blocked.