Before making predictions one has to understand
why this is Rossi's track...
After they 'transmogrified' Assen, this is the last old style European track, all rhythm and speed. No turnpins here, the slowest corner is 100 Kmh. A lot of 'blind' corners, you have to memorize the entry of those and trust your memory.
The first blind corner is #1 right after the start... Here one also climbs fast (Arrabbiata 1 and 2) and goes downhill at monster speeds. The Casanova-Savelli is my favorite place.
Phillips Island is a little like that. Fact is, the faster it goes, the more the good riders shine. Everybody can go nicely around a corner at 80-100 Kmh. When it becomes 180, or 200, the natural selection begins
So it will be Rossi, Stoner. Stoner will try very hard to beat Rossi, I think he has a chance.
Pedrosa could also be there but it has to be seen whether Honda will have tyre problems here or not. There will be no soft compunds at all.
Lorenzo is un unknown factor. Last year he crashed. It will be the test of maturity for him--if he passes the Mugello test, making a podium, then he must be reckoned with as a real force.