I've been discontent with playing the ADC BECAUSE, they are only their for damage, and become useless if behind. (Though I main support, and insure to the best of my abilities that my ADC get's fed)
I'm not sure as a generality of "Best bot lane wins." But in my experience, Bot lane is almost never the first lane to go strait to hell. I can usually have enough vision to foil a lone Jungler's gank. It's only when the mid or top lane fall behind, that frees the rest of the enemy team to gang bang the bot lane. (That's were the real snowballing comes from)
Though Honestly, the lack of Armor plating on bot lane turret is a bit of an overstatement. Mainly because the fortification falls off all turrets by the 5 min mark. So Really you would need a very early gank to really take advantage of the difference. (Unless bot lane itself went strait to hell on the word go)
As for the whole First turret blood. (pertaining to preventing the lane swaps) The whole point of putting the Duo lane bot side was to contest drake. (historically anyways) So perhaps they should have put the first blood gold on drake instead.