It's important to me as a Kiwi; it was all we had in the early part of the war until the US had enough Corsairs to spare, later on. It was responsible for the majority of all nme aircraft shot down by Kiwis during the war in the South Pacific, I believe.
But I think people expecting it to be an early kill will be a little surprised. It was definitely not a slug, and in fact racked up a pretty respectable kill ratio, particularly in defending Australia, even when it was up against superior numbers of a "superior" fighter.
To make it work in the MA, just make sure you fly in pairs. Historically, this worked pretty well against the lighter and more agile Zero. It was a pretty popular choice when introduced in Warbirds, I seem to recall.