Love it as well. Wastes way too much of my time.... Been struggling for two days trying to destroy a damn vehicle with the repair tool to complete one of the assignments and just can't seem to catch a break. Every time I get close they get out of the damn thing.
careful, sometimes when you actually destroy a vehicle with the repair tool, the explosion will make you suicide.
for anyone interested, this site has dmg breakdowns for guns, accuracy plots, a diagram that shows how much dmg rockets do to tanks, attachment bonuses, breakdown of specializations, etc...
http://symthic.com/?s=bf3