Can a perpetrator be charged with resisting arrest if its a citizen's arrest?
Do I have the autoritah?
NAL but I don't think so. Citizens arrest just generally allows someone to detain someone else (under certain conditions). Resisting arrest is a separate law that applies to uniformed police.
If they could, it would be much easier harder to resist kidnapping.
Harder you mean?
Derp, yes. I can't brain today, I have the dumb. I think I started to write "it would be much easier to kidnap someone. "