shrug* half right.
Except its coming from someone in the same elo as you so it means nothing.
if that was a diamond telling you that in a normal it would make some sense since he obviously got to diamond playing well enough to get there...
Basically don't listen to people talking about higher elo bullshit and just focus on you./
Don't ask people to make a teamcomp.
Ask them to play what they're comfortable with.
A comfy team generally performs a lot better than a team on picks they consider "counters"
this is true until around diamond when people start learning how to win lane easily with a counter pick/stronger pick.
And even then I've been playing kat against a leb/ahri/malz and shit on them because I mechanically out cs'ed and out roamed and out played them in teamfights with good positioning and proper lane set up for ganks/counter ganks.
It's all about personal skill in solo queue.
duoing will only get you so far.
And getting carried will be the same story as duoing,
eventually people will brick wall you and you'll have to catch up mechanically to climb.
Until then just enjoy learning the game and don't stress about others.
It's not worth your braincells.
Just focus on reading guides improving play asking questions and learning.
Don't worry about other things.
=]