Is it wise to boast Merlin force can do 2300 hours a mont?
I don't think he does. As I read it, what he means is:
"In 2010, the requirement from the British SH force was 2,300 hours per month. We were unable to meet this with just Chinooks, so we deployed the Merlins as well. Now, that demand has fallen by 40%, we can meet it just using the deployed Chinook force"