(KagShu) I'd say the difference is like the difference between the th's in thing and there, this, that etc. I don't think there's any difference between American and British English on this point.
[Superman] You can hope, and you can stack the deck with a difficult rhyme in the first line, but in the end you get no more say in the finished product than if you'd played a move that offered wide-open possibilities to everyone else.