Tanks who build defensively don't do damage. Have you ever seen the damage output of a full tank Amumu? Sure he can 1v1 a squishy target if they can't peel, have terrible positioning, and don't have any resistance pen, but literally anyone can do that.
Bruisers, on the other hand, are Fighters who rely more on base damages, base AD scaling, and raw bulk to get their job done. They can be kited, and typically have low CC and no dashes. They usually have a secondary attribute of Tank, and they often build many tank items, however don't let this fool you. They are Fighters.
The way I see it there are three ways to beat a Bruiser:
- Put another Bruiser against them.
- Put a duelist against them.
- Teamwork.
Bruisers are naturally strong against other Bruisers. Sure you could put a ranged champion against them and just kite for days, but people who main Bruisers know how to not fall behind in a matchup like that. If they come out even they can outscale in the mid game. The double Bruiser lane, with the way they snowball, is a sure fire way to keep an enemy Bruiser behind with just a few ganks.
Duelists, however, are fighters who excel in 1v1 situations. Many can handle multiple opponents, especially once they start snowballing, but they are perfect for stomping on a Bruiser's early game hopes. They are fighters who rely on additional mechanics to stay alive, be it CC, dodges/dashes, or simply burst damage, rather than the Bruisers and their bulk. Because of this getting a Duelist ahead can not only completely shut down the Bruiser in question, but it can end up snowballing the game. Riven is a classic example of this.
The last option, of course, is the best fit for any given situation. You can counterpick all day, but eventually there will be a situation where you have to face the enemy Bruiser without your counterpick ally around. Each Bruiser has a different set of strengths and weaknesses, so recognizing when a particular strategy will be appropriate is your main concern. Typically focus fire with CC is the best way to flat out remove a Bruiser from a fight, however you want to do this before a team fight happens. Ward well and try to catch them off guard, then use your number advantage to push down objectives.
A few key points to remember:
- If you can't 1v1 a Bruiser don't fight until an ally is there to assist, otherwise you'll just file in one at a time giving kills.
- The main power a Bruiser has in a team fight is their threat level. They want you to focus them instead of their allies, and if you ignore them they can kill you anyway. Don't fight on their terms, either enter an anti-siege position or split your pressure around the map until you can catch an enemy or two out. Bruisers make you choose who to focus, make sure you choose on your own terms.
- Bruisers scale well with experience. Just because you've zoned one from CS for a while doesn't mean they are behind. They will punish you for mistakes regardless of your gold advantage, so make sure you treat them with respect. The best way to lose to anyone is by getting cocky, and this goes doubly for Bruisers.