Choppers > tanks in any situation where both are aware of each others position, and both are actively trying to destroy one another. Is this even up for debate?
I don't think this is open for debate.
1 on 1 if they both are aware of each other and the attack chopper wants to take the tank down they will do it even without a gunner. The only thing the tank driver can do is run for cover in a warehouse or tunnel.
The chopper pilot just needs to stay at medium to close range and keep enough altitude to stay out of the tank main gun angle of fire.
A good pilot like you can rain hellfire from above on tanks easily without ever getting into the tank main gun attack angle, you just need to stay high enough.
The tank gunner's machine gun can't damage a chopper fast enough to take it down first. But if we are allowing gunners into this debate the chopper gunner will rip a tank apart in seconds with regular fire and guided missiles.
Painting the chopper with the CCTV doesn't help either because the tank can't shoot guided shells at such a high attack angle. The heavy machine gun won't help either because it's attack angle is the same as the main gun.
1 on 1 at the same skill lvl. chopper will always win. Attack choppers were made to eat tanks for breakfast.