Alcides' arrows are some of the fastest (able to slip through Gil's auto defense NPs which shoot literal lightning bolts) and hardest hitting projectiles of any Servant thanks to his incredible STR (+ War Goddess Belt's buff). One arrow from him was enough to shatter Gilgamesh's golden armour, which was able to deflect swings from Excalibur without much trouble.

Emiya's traces, while inferior, are still Noble Phantasms in their own right and even then every time he deflected a shot from GoB with his traces they broke.

The power of Kazikli Bey is in the sheer quantity he can control (2,000 max summoned at any one time with up to 20,000 controllable simultaneously) but it is noted that each individual stake is merely an 'ordinary stake' not able to trouble Servants. However Gil has shown he is able to open up GoB at its max to fire off hundreds/thousands of shots in mere seconds with each shot having tremendous power. Not to mention Gil also has countless powerful defensive NPs capable of defending against the stakes with ease.

Dracula Vlad got completely shit on the moment he was hit with holy weapons. Heck they were mere Black Keys even if they were boosted by having a Saint use them. All Gil has to do is pull out a powerful holy sword NP like Gram or Merodach (the latter of which he is fond of using) to shit on Vlad. Not to mention Gil does have a speedster feat from when he backhanded Alcides' arrow to protect his Master.

Against Achilles if the latter doesn't use AK he gets curbstomped, if he does Gil just goes lol Ea GG.