User blog comment:IamJakuhoRaikoben/Chapter 466: Assassination, Review./@comment-5303512-20151216145356/@comment-24102956-20151218020836

Brandish had mentioned that if Marin didn't play around with Natsu and Gray at Caracol Island, he would have easily defeated them in a blink of an eye with Spatial Magic. Instead, he turned 180 on men and played around to see their futility of trying to hit him no matter how they try.

If he can take down Fairy Tail or at least cripple their strength for the rest of Alvarez army still marching to Magnolia to finish the job, Marin would have the element of surprise and momentum to take them off guard, picking off some any random members one by one or even groups at the same time before they realize and retaliate.

He may not look like a powerhouse but he was the one who gave FT a big wake-up call that Alvarez is no easy walk in the park for them since Avatar before Brandish showed up to prove the point. Natsu even claims that FT's one-year powerup which is BS is enough to beat that country since the team had steamrolled the Zeref cult too easy but he was dead wrong.

Heck even Ajeel's resistance to One Punch Man wannabe Natsu like nothing happened and his deadly pursuit on them also supported the fact their country won't be taken down that so very easily.