Ireland v Sweden won't be so bad. Recently Denmark went down to Ireland by 20 points and only "comfortably defeated" Sweden. The real worries will be New Zealand v India (a good cricket match up, but hey, this is Australian Football), PNG v Peace Team (so much for the peace), USA v China (an interesting match-up politically, but OUCH!), and Ireland v Finland (omigod).
They're going to need a mercy rule.

Also I think teams should be pooled with neighbouring teams as little as possible. There are five European teams so surely only two of them should have been in one pool with the other three spread out. They have Ireland, Sweden and Finland in one pool - particularly disappointing those two neighbours who already meet regularly. What's the point? Should have swapped Sweden and Japan.