Stardust Dragon?

[FuranData]

hi!
i was study" yugioh tcg mechanics xD at? upperdeck yugioh forum and i found (sorry my english is bad ja)this:

"Gladiator Beast Secutor (special summoned by a Gladiator Beast) attacks a face up defence position Stardust Dragon. There is a gladiator beast in the graveyard. At the end of the battle phase secutor special summons Murmilo and Darius. Simultaneous effects go on chain, Murmilo being mandatory is Chain link one targetting Stardust, and Darius (optional) is chain link 2 , choosing to use the effect to special summon the gladiator beast in the graveyard. Is it true that in this scenario, Stardust cannot negate Murmilo's effect since it cannot be activated right after?

Answer:

1. "Stardust Dragon's" negation effect must be activated in response to the effect it intends to negate. In the provided example, it is not possible to activate "Stardust Dragon's" effect to negate the effect of "Gladiator Beast Murmillo"."

and i don't understand yet, why DB murmillo can destroy SD? maybe because it is in english or mm no se xD

jaja * payaso soy, perdon es * me traume leyendo muchos temas en ingles, en fin la pregunta es esa, xq si puede?, o no entinedo anu xq o no entendi la explicacion xq estaba en ingles, asi * mm alguien * me explicara por favor? je, gracias y perdon je