Unfortunately for Verdi, "weaving" does not really work when 12 continuous beams are converging on your position from multiple angles thanks to flexible emitters which were obviously there, making the beams move around from the start. As if that wasn't enough, 10 rapid-fire mega particle guns, blasting continuously and from slightly different positions, covered the general area around the Masurao in enough firepower to destroy a fleet of battleships. One can weave around a few punches or a couple rocks, not a storm, and a storm was what the Masurao had to deal with. Backing away wasn't much good either, since it didn't actually move it out of the way.

As the power limits were off in this academy for whatever reason, Chuck was able to simply keep the barrage up, firing a total of 22 reactor-fed, high power mega particle weapons towards the single target, meaning its GN field shouldn't be able to hold for long. And sure, spinning a sword around to deflect beams was nice, but this was, once again, 12 of those converging from different angles at once. Even if their source was the same the different heights they were mounted at on the Axis Zeong's body and their flexible joints meant the sword could not possibly block all of them at the same time by virtue of their different approach. 

It was as simple as timing it so each beam would swing towards the Masurao at a moment where the double bladed sword would not be handy to block them. Nevermind 10 machineguns emptying at it at once, putting shots everywhere. You'd need an actual wall to stop that, and even then the sheer amount of shots could potentially bring it down anyway. Sure, the Masurao could try to approach and get into melee range, but that'd just mean getting closer to the more than 20 guns shooting at it at once and nothing can block things forever, especially on the approach, and Axis Zeong's weapons were its entire reason to be: dominance through firepower. These were not just thrown into the frame, these were carefully made to destroy things as best as possible, and they were very good at it.