The thing about quoting his scores for Queensland is that it's a long time ago and it was only 3 matches anyway. There's no point quoting them if you don't bother to go through everyone else's records to quote similar statistics and consequentially proving that noone in the world is good enough to bat in any position for Australia.
If past stats are the be all, end all, then you probably would have reasoned that Katich should never have been picked again after being dropped in a year for which he averaged 29. Indeed many pundits ignored the incredible rate at which he was accumulating runs domestically. It was also a manoeuvre that caught many off guard when he was placed in the opener's position. The results proved the doubters wrong there, but the important point is that there would have been nothing to prove had the doubters got their way, he just would have been a batsman who failed and was never given another chance. If there are no chances taken, then there can be no gains.
People keep chanting "Watson is not a Test batsman", as if to stop saying the mantra makes it untrue. It's one thing for it to be an opinion; and a popular one, at that; but why does it need to be said three times a day? Let him have a bat. If the claims have any substance then they deserves to be proven, rather than just based on tired arguments.