They are struggling because they aren't at all using their full strength, filo isn't transformed, naofumi isn't using his shields and Raph is not using her illusions, did you forget they are in hiding?Am i the only one that feels this fight is kinda anti-climactic? I mean the manga is still fun but with the level of the previous fights it feels like they shouldn't struggle with an opponent of this level (I know it's just the beginning of the fight but still).
Like idk it kinda looks to me that they haven't improved or even regressed compared to before which is a little frustrating. I guess I'll just wait and see maybe the author has a surprise for later but I hope the pace picks up a little (on a side note is it me or does it feel like forever since we've had a new shield or even a proper fight where he uses his shield skills).