Id say that was 75% bike : 25% car fault in this accident.
If he was going slower then any number of things could have happened but if you insist on driving around at 100mph then expect the consequences of a 100mph accident when it comes along.
Sad though...
I don't see it like that, yes the biker was going way to fast and yes if he was going slower then any number of things could have happened.
You can also say if the diver didn't cut a large chunck off the corner and did infact turn where he should have he would have seen the bike, You can also say if he'd done just that and then stopped/looked before turning like he should have the bike would have been past the junction.
This is a NSL road not the local high street, lots of speeders both bike and car on these roads you simply must stop and look before crossing! Both to blame.