I think most British people who say they can do an American accent are so bad at it. I find it excruciating. I find it excruciating the other way around, too. ↗
I've been online doing all kinds of research and that seems to be the constant criticism, that Aibileen's accent was just too thick. And for me, I don't want anything to distract from the character. ↗
The tricky thing becomes: Do you know yourself well enough to then portray that on screen? And for me, I find that really hard. I'd rather hide behind accents and funny walks. ↗
But I just know from experience that accent wise, even if you're an accent genius, crossing the Atlantic is the hardest thing in the world either way. ↗
I was the executive editor on a little magazine called Greek Accent, whose only claim to fame is that its art director went on to be the art director of Discover for many years. ↗
For whatever reason, we relate to anything godlike with an English accent. The English are very proud of that. And with anything Roman or gladiators, they have an English accent. For an audience, it is an easy trick to hook people in. ↗