User blog comment:TheTobarMethod/Guide To ADC/@comment-37.128.4.212-20130223164109

It's not just eg. Cait > Vayne. Bot lane is a 2v2 lane. IMO you should list it like

Cait+Lulu > Vayne+Nunu

or

Cait+harrass support> Vayne+no sustain support.

Bot lane is something like rock-papper-scissors.

Burst > sustain (killing the enemy bot lane fast enough so that they won't be able to recover with heals)

Sustain > poke (outhealing the poke)

Poke > burst (keeping the enemy bot lane low HP to make them think twice before engaging).

Sona, for example, is a great support because she provides all 3 of these. Q+passive poke, W heals, kill potential with ult.

You could also add some information about popular bot lane comps like Ez+Sona or Graves+Taric. What to pick and how to play against these.