PSA: A Tank Should Only Have the Value of One Player And Be Balanced With Such an Idea

Therefore, if a Tank dies quickly if focused down by the ENTIRE enemy team, that is ok balance. While, of course, there is a limit to how fast you can die as a Tank, you should not be able to solo an entire team's damage. Only Tanks where Riot has specifically stated "This guy is durable as HELL!" should be able to do such, like Alistar and the likes. SO, if you are a Tank and get focused down by a team full of damage, realize that you are GOING to need support VERY soon or you will die very quickly.