However, tanks have serious flaws that can make them vulnerable without infantry support. For one thing, they're much bigger targets. They can't shoot targets that are next to them (whoa re probably stickying them). They can't really remove walls effectively. Personally if we upgrade infantry, we need more ways of exploiting inherent faults of the tanks, but still let tanks win in an open fight. Let's face it, tanks cost res, respawns only cost tickets.