I think comparing the openers of both sides is an interesting one. England have two specialist openers, while Australia have two manufactured ones, maybe part of the reason Katich and especially Watson have not got a better conversion rate. Watson to his credit has been very consistent since he's moved to the top, but I've always thought a Jaques or a Rogers would have made more match defining contributions, ie big hundreds. Katich as we all know is a horrible batsman to watch, but I think a real nuisance to remove, Watson you'll always feel you've a chance of removing, but he can score quickly.
There has been question marks over the form of Strauss and Cook in the past year. Both openers have had to overcome pretty major technical issues, Strauss' dismissal in the last tour game was a perfect example of the area he really struggled with, driving on a fullish length just outside the off stump, it would invariably fly in the air to the gully area. To combat that when he played the series in NZ, that pretty much re-invented himself, he opted to leave virtually everything that was on that line, and just work with the deliveries where he got his head in line, and played the ball under his nose. His driving has since improved, through the cover region, but he does need to wary of this line of attack. He's also struggled of late with left-armers, so Bollinger and Johnson should certainly be able to test him. Another reason perhaps for Bolly's inclusion.
Cook has always struggled on a similar line, just outside off, bringing him forward where he just pushes at the ball. He also drived with a very stiff front leg, and much work has been done with Gooch to get front knee flexing much more.
Both are very good on the cut and pull/hook, so if the Aussies err ever so slightly in length these boys will love the bounce they'll get here. I don't think there's very much between the openers on either side, perhaps it's the ones that can go on and make it big that may prove the difference.