...Yes. Normally, they gather powerful Pokemon - both in body and mind. It is part of their goals. Having weak Pokemon would not do.
The best way to deal with them is to paralyze them. If they're affected like that, they'll be easy to defeat.
[He's had to make his own plans, after all. In case another trainer had them, of course. Not to fight his Lord. He couldn't fight Lord Ghetsis. (Note that he did watch the presentation which was recorded, during his first days awake here - he wanted to survey what was going on, after all. So that's how he knows who's being talked about.)]