Games Too Fast

I've noticied that in every games I've played in pre-S6 one team snowballs, then stomps out the game. It's as if the game has become all about those level 2 battles in lane, and whoever wins that wins the game. With all of this tank destruction happening nobody can catch up, because that's what tanks did. They soaked up damage so your behind ADC or APC could dish out damage despite being behind, they won team fights. With this newly found AD tank destruction going tank isn't nearly as effective and you can't attempt to save your team because you die so quickly in the team fights. I feel like the game has become to 'snowbally' due to the new changes.