Perhaps this will clarify, if anyone actually reads it (though past experience suggests not).
* Yahtzee is British, living in Australia (NOT America). That is as it has been all along.
* There is not one "African accent". Africa (the continent) is over three times as large as America (in the sense that it was mentioned above). America has many accents, but of course Africa has only one. Oh, wait...
* The accent heard throughout FC2 - and the accent, incidentally, that Yahtzee was emulating in the review - was a South African accent, derived from the Boers and their Afrikaans language, which is why there are elements of the accent that are vaguely reminiscent of Dutch.
* South African accents don't sound like Australian accents. Except when I do an Australian accent, in which case it sounds South African, or if I do a South African accent, in which case it sounds Welsh. But try not to worry too much about that.
* Yahtzee does not, judging by the review, have a cold.
Happy to help. ;-)