I agree with everything Andrew says below and add a comment on the tone of your last para.
You are right in what you say, but clause 63.1 allows for CHANGE in Defined Costs plus Fee as a result of the compensation event(s). So whether the Contractor has under or over-resourced for the original work is, in theory, irrelevant: it is the change due to the compensation event that changes the Prices.
In practice, if the Contractor has over-resourced, then the over-resource might be able to take up the slack in terms of the extra work generated due to the CE i.e. no change in Defined Cost. If they had under-resourced, then they would need additional resource and the issue might be what new resource is due to the CE and what is due to the under-resourcing of the original work.
You are right in what you say, but clause 63.1 allows for CHANGE in Defined Costs plus Fee as a result of the compensation event(s). So whether the Contractor has under or over-resourced for the original work is, in theory, irrelevant: it is the change due to the compensation event that changes the Prices.
In practice, if the Contractor has over-resourced, then the over-resource might be able to take up the slack in terms of the extra work generated due to the CE i.e. no change in Defined Cost. If they had under-resourced, then they would need additional resource and the issue might be what new resource is due to the CE and what is due to the under-resourcing of the original work.