In no way am I trying to say that VOY borg are as strong as the borg in best of both worlds. I'm trying to say that some of the complaints used against unimatrix zero can be said against best of both worlds.
Mechanical arms: I will admit that I thought that at least one of the three that got assimilated should've got an mechanical arm. But Picard/Locutus got a mechanical arm and was fine next episode. So even if they did, I don't think it'd be much of an issue. I'll reply with pictures.
Viruses/weapons: so in unimatrix zero they made a virus against the borg which is a complaint. But in best of both worlds they were coming up with weapons there too. And they'd only seen the borg once before that time. By unimatrix zero, they'd encountered the borg several times and even had a former borg apart of their crew.
Easily treated after assimilation: That was the case in best of both worlds too. Picard was normal as if nothing happened next episode.
