Project Management - PMBOK

[BenzZz]

Hi,

I'm writing a report particlaurly about how some project management methods approach risk management.

I have chosen to write about how PRINCE2 and PMBOK do this.

I'm fine with writing about how they do it as i have researched them a lot however you also have to criticise their risk management and i cannot find much criticism on them anywhere.

I wondered if anyone could help me with any criticisms/disadvantages of PMBOK particularly but also PRINCE2 in relation to their risk management?

Would be much appreciated.
Thanks.