Tanks/Bruisers/Sustained DPS Balance

I play this game very inconsistently with a group of friends (I queued with 3 this time, but it varies).... Sure i'm not diamond mostly because i don't really care for ranked lol. I could easily become an average player, satisfied with gold if i put the time into this game. Sure i've supported riot in the past with bug fix reports/tribunal shenanigans/test realms/etc... But really i'm fed up with this game for the following reason... Balance. This is just one perspective and sure i'm going to get downvoted to hell for this, but really i'm not willing to play this game as seriously as i once did during beta & season 1...

Why is this even allowed to be a thing? The following logic of "I can dish out just as much damage as an ADC, but never die because i'm a tank". I understand the example above in the screenshot was taken against a bunch of noobs - But hey, this is just ONE example. I love maokai/malphite/pantheon/old poppy, but if I were to face a typical bruiser i'd throw my hands up in frustration knowing i'd get ravaged upside down sexually by them lol. It's NOT fun playing against these characters, and never will be lol. CC is fine, it HAS to be apart of the game, but the damage is getting out of hand.... I was literally giggling on skype with my buddies as to how busted these characters were.... Just my two cents on the entire bruiser issue - I'll leave the serious comments & opinions to the actual professionals of this game though.

./end rant, probably won't check this thread till my next QQ spree about league of legends. Just check my match history/post history on the forums lol.