I will say
. Not because he is a stronger champion,
is a much better champion overall, but because he is less dependent on the team.
is always useful whether he is behind or ahead because of his kit, but he is more dependent on teammates responding for his ult and being cooperative.
can largely act independently from teammates, but if he falls behind he is useless.
Whenever I suggest climbing champions I usually don't want them to be team-oriented, because if your team is bad (which it will be in low Elo) then team weakness becomes YOUR weakness.
When you get to gold team-oriented champions are fantastic, because players know when to respond to your actions. But in Bronze and low Silver the quality of your teammates is a crap shoot.