Cons: Tower Rook is useless at parties -- He's pushing the left lane on cataract, and there's a big squabble going down in the middle, tower rook might as well just stay put cause he isn't going to get there in time to help, and even if he did, what is he going to do, build 1 tower, and ask everyone to hide behind it?
Cons: Towers do not scale -- So, you've got those towers nicely going there, but the game is getting a bit longer now, and some people have some decent gear. Heck this oak player has 50% damage mitigation, 5k hit points, and some priests, and seems to ignore the darn things.
Cons: Towers do not focus fire -- Oak again, this time he's going for soul power maxed out. His 10 minions and perhaps a few idol minions around him, and the towers just aren't shooting Oak very often.
Cons: Tower clusters weak to AoE -- Frost nova, mines, etc, all can damage or negate a large number of towers by quite a bit. Just having an enemy regulus in the lane can keep your farm from growing very big too, because he can work them down as you build them.
Cons: Towers require a long time to setup. If you start losing, you lose hard. -- Rook gets ganked by a pair of people, and a beast is left in the lane rook was in. All rooks towers collape, and now rook has to try and rebuild again. Only problem is that a single tower isn't much of a threat to the Beast, who can spit/ooze/grasp rook to death pretty handily. He can try getting his towers going starting from far back... but 10 seconds per tower means he is spending a long time not even near the flag, or other important things.
Lastly, a lot of games are 3v3 with 2 lanes. That means that in half the cases, someone is being double teamed on one lane, and someone on the other team is doubled up on in the other lane. Tower rook just doesn't contribute well to either of these scenarios. If he is the aggressor in a 2v1, he doesn't bring a lot of damage or snare to the table. If he is the 1v2, 2 DG's of equal strength can easily out dps his towers, especially because the towers don't focus fire (see con above).
End of Zechnophobe's quote
1) It doesn't matter if the rook can't go in and fight, he will just push that lane until all the towers are gone, plus if your teammates are smart, they will simply retreat if they are low, however a tower rook NEVER needs to retreat, especially with HoL.
2) Usually a game with a DECENT tower rook will end before late game. In fact 95% of games end before i get to level 20. Also, a tower rook will prevent people from leveling because he can control 2 lanes quite easily, especially with Amulet of Teleportation.
3) Who cares if towers don't focus fire, they do so much damage and have so much health, especially with the tower upgrades at the Cit, that they will kill your minions before you can down even 2 of them, unless of course you have 2 people working on that tower farm, at which point your leaving one teammate to fend for himself against 2 other DG's.
4) Ok so AOE is the only thing that can take down towers fast and efficiently. Who has the best AOE? TB, who is the squishiest DG? TB. I play TB exclusively and going into a tower farm to AOE it, usually never takes out the towers and leaves me at less than half health. Reg is useless against tower farms because 8 towers will not go down by his auto attack alone considering towers have a 7 sec cooldown to rebuild.
5) Im sorry but towers do not take a long time to set up at all. If your in the lane, all you have to do is summon and tower and auto attack the DG until he retreats because your damage plus your towers damage is too much for any one DG to handle. This means you will EASILY build more towers and you will build them quickly.
6) Early on, no 2 people can take 2 towers plus the tower rook, and as the game progresses, you get more and more towers and more and more damage, including a stun which can really mess people up if they decide to come into your tower farm to break it up.
Im sorry but if you honestly think tower rooks aren't OP, ill get 2 friends to go tower rook with me and you can get 2 friends and do whatever you want and i can almost garuntee you wont win.