Clash Tier 4

I looked at clash FAQ but couldn't find my answer. I swear on the original clash posting said plat-bronze/iron players would all be basically playing in tier 4 tourneys. If your team even had say 1 diamond 4 player you instantly would be bumped up to tier 3. Anyone else remember reading this?

I think overall it's not a huge deal to have plat-bronze in the same tier since arranged 5v5 is a lot different than solo queue. But at the same time I was just curious if it is weighted at all? I can't imagine there being a team of 5 bronze players queueing up together, but hell it could happen and if does good for them. But to me that seems really unfair if they were matched against a team of say all plat or gold/plats just because they were both in tier 4.

So my question is tier 4 for clash weighted at all? So if I say played with 4 silver friends even though I am only plat 4 would that like weight us higher at all? I believe we would still just be tier 4 and playing just a random tier 4 team? Or does it like try to match the tier 4 teams as well? Otherwise we could easily play a team of 5 plats or whatever. Just curious if there is any extra weighting within tiers? Or once you in a tier it just random who you play?