The difference is that Patch has more health and can take out stuff faster. Try shooting at the head with patch and you'll know what I mean, ppl can drop really fast to that. Not to mention the shots from the 150 Sydney are easy to dodge and splash damage wont do it. Patch is only usefull against infantry and light tanks, other then that it takes a full clip to do like one square of damage. I dont agree the machinegun guy is better then the patch, first off he has less health, second his range is shorter. IMO patch is worth the money.