All vehicles seem to be bunkum now. I even stretch that to LRs. TBH, I briefly read through the book and hopefully will be playing my first games of 6th tomorrow, however from the way I read it, each glancing takes off a hull point. 4 glances and your raider is dead. This has its ups and downs. 4 simple glances can drop a raider, but it will still have full functionality until it does, where as last edition a glance could cripple it, or if your opponent rolled badly, you could shrug off 1's and 2's all day long. The change to the ap1/2 modifiers also makes vehicles that much more fragile, however you could argue that if melta was in range anyways your tank is as good as dead even in the last edition.
I am happy they changed how vehicle squadrons handle immobilized results.
Just my humble opinion.