It's hard to answer that question without knowing the details of your case and what IRCC is saying you misrepresented.
If you misrepresented information and in the PFL you confirm that you misrepresented information and then provide the right details, that's still misrepresentation.
If IRCC has accused you of misrepresentation and you did not do the things they have said (e.g. they say you have a past refusal for a US visa that you didn't declare but you don't have a past visa refusal), this is something you should be able to argue.
Again, very hard to comment without knowing the full details.