A single game isn't really valuable for determining a champion's strength. My first game as Ashe after months without playing ADC ended with me at 25/3/12 and having hit every cross-map ultimate and interrupting valuable skills (Fiddlesticks ult channel, an ultimate Yasuo, etc). It doesn't mean that Ashe is broken or overpowered, it just means that I had a good game.
And, well, it looks like that game had your bot and mid lanes crush theirs, so your enemies were behind while you were fed. In that situation, most tanks and bruisers can be very hard to kill simply because they are so far ahead of their enemies.