Axis and Allies RTS - Rocket Trucks - We have to admit, we kind of like them, but thats about the only reason to build them in online play, except for maybe "They look cool!". You always have to consider if there are other regiments that might be more effective for the cost. In this case, that would be Russian arty tanks or Russian Armored Rocket Trucks. Both of these armor regiments have them same support vehicles, so it basically comes down to the Rocket Truck vs ISU-152. Although they both claim to have the same recharge time, the rocket truck has always seemed slower to reload than the arty tank. The most glaring differences are below.
 

health = 225	health = 330
defense = 2	defense = 5
range = 25	range = 44

See www.axis-and-allies.com/russian-rocket-truck-halftrack-regiment-ww2-rts.html
See www.axis-and-allies.com/russian-rocket-truck-armor-regiment-ww2-rts.html
See www.axis-and-allies.com/artillery-arty-tank-armor-regiment-ww2-rts.html