U have to consider the game as a whole.. is solo top an item reliant champ? Will he need to get fed to be effective.l, is my Adc getting kills, are they getting bullied, does mid need to go back for mana / items.. oops bot just got wiped gotta cover their turret.. ok now our blue is up, their blue is up in 30s can I give it to our apc. Which lanes are pushed, which are not. Some times other things take priority over a gank. Jax is a solid toon, garen is as well but garen takes longer to rev up.. on the other hand their vayne is 3-0 already she may need shut down.. did u ask for ganks? Were u ready? He might have been fail but he might have been trying to do his job and/or help the rest of the team.