why not just make cobras? they're anti-vehicle, anti-building and, seeing as in this strategy there are no air units, it is perfect.
/How about
1:be cutter
2: if they're going to do that rush strategy, make 2 elephants, supply pads, reactor, reactor, do cryo glitch
3:supply pads, make 15 cobras, then set the elephants up by the base
4:spam flamers/odst and use your cobras to attack their wraiths and use everything to attack their bases.
simple
A 3 star fully upgraded arbiter and a well placed super mac blast (4-shot) will kill ANYTHING. THAT INCLUDES 14 VULTURES, 99 ODST, 33 GRIZZLYS OR WRAITHS AND 49 VAMPS,CHOPPERS,COBRAS, WOLVS OR 99 FULLY UPGRADED GHOST. serious. that combo owns.