^Well Australia bowling poorly is certainly possible. Siddle and Johnson are notorious underperformers. Can get bags of wickets when they get rolling, but can also bowl a lot of rubbish. Look at Siddle's new ball spell last night. No swing, even though Hilfy was hooping it at the other end. Too short, which meant he beat the bat a couple of times but was nowhere near the edge. I was YELLING at the TV to get it full. Both Strauss and Cook hang back in the crease and you need to get the ball up there. It was the same in the first innings - Cook was rarely forced onto the front foot and when he was it was on the pads. Just looked at Cook's wagon wheel, and he scored 2 singles in front of square on the off side. 2 scoring shots there in 170 balls!
Honestly, Australia have been really lucky here, some random Siddle success and a couple of guys who made 350 between them, not to mention getting the odd piece of luck with referrals. Will be good for the team's confidence if they can finish England off, but I'm not sure it says too much about the rest of the series. Other 4 Tests should be very close.
If England are still in by the end of the day, there should be a match on. They'd be in front by 100 if all has gone well. Anything over 100 in the last innings won't be particularly easy.