There is not a definitive answer here, just a most likely one. However, firstly I assume that in point 9. you mean the PM does not reply within 2 weeks and 1 day of the reminder notification, not the original. Tell me if that is wrong and I will re-edit the response.
Here's my view :
When we look at the number of breaches, the PM has potentially committed two - not assessing a compensation event due to the first bullet point of 64.1 & then being late in replying despite a reminder. The Contractor has one : taking 6 weeks instead of the allowed 3 weeks to submit the quotation.
However, while the original breach was by the Contractor (in taking 6 weeks), the contract has express provisions for dealing with this (the PM assesses), which the PM fails to do. Indeed they do a 'wrong' action in 9. by stating that a PMA is required because the CE is wrongly assessed, not that because he or she should be making an assessment. That makes 3 !
So given a 3:1 breach / wrong action ratio and the contract deals with the Contractor's omission in taking longer than the 3 weeks, but the PM failed to follow the contract, I would plump for the Contractor.