assault cannons can basically deal with anything effectively, from lowly guardsmen right up to heavy tanks although at both ends of the scale you lose a little effectiveness. Then again you dont really need to care that much, since all the assault units inside can deal with guardsmen or equivalent units without much difficulty and if each of them contains a meltagun then any heavy tanks (eg land raiders) on the board will be getting fried.
The main bonus of this sort of list is survivability. To destroy your troops the neemy will need to destroy 6 vehicles and then take out 30 marines, which is not an easy combo to do (I used to use 3 rhinos in 1500pts and rarely lost more then 1-2), especially when you back them up with more armour all over the field. I'm not really that familiar with the exact options for BA but (if possible) then taking out Dallas_Drake's MM attack bikes and replacing them with land speeders with MM would make it even nastier, confronting the enemy with 14 vehicles and zero infantry means that for large portions of the game a lot of his guns will be pretty ineffectual... while those armies with good anti-tank capabilities tend to not have a massive number of them (eg Tau might only have 1 unit of broadsides and a couple hammerheads for main anti-tank, plus some battlesuits later on.... by which time you'll easily be in their lines).
I used to run mech-wolves with about 9-10 vehicles (3 rhino, 1 razorback, 1 ven dread, 1 dread, 1 LS storm -4th ed SW- a vindi, a LS tornado and a drop pod for a dread) and nothing outside of transports and even then I dont think I ever really had a problem of not reaching the enemy before anti-tank started to be a problem... with this list you'll get there far quicker and have far more vehicles to split the enemy firepower.
The main bonus of this sort of list is survivability. To destroy your troops the neemy will need to destroy 6 vehicles and then take out 30 marines, which is not an easy combo to do (I used to use 3 rhinos in 1500pts and rarely lost more then 1-2), especially when you back them up with more armour all over the field. I'm not really that familiar with the exact options for BA but (if possible) then taking out Dallas_Drake's MM attack bikes and replacing them with land speeders with MM would make it even nastier, confronting the enemy with 14 vehicles and zero infantry means that for large portions of the game a lot of his guns will be pretty ineffectual... while those armies with good anti-tank capabilities tend to not have a massive number of them (eg Tau might only have 1 unit of broadsides and a couple hammerheads for main anti-tank, plus some battlesuits later on.... by which time you'll easily be in their lines).
I used to run mech-wolves with about 9-10 vehicles (3 rhino, 1 razorback, 1 ven dread, 1 dread, 1 LS storm -4th ed SW- a vindi, a LS tornado and a drop pod for a dread) and nothing outside of transports and even then I dont think I ever really had a problem of not reaching the enemy before anti-tank started to be a problem... with this list you'll get there far quicker and have far more vehicles to split the enemy firepower.