Ranked is just pubs with numbers. You can 5v5 just as easily in an actual pub, I've had it happen quite a few times. You can still get shitty players in ranked, still get players that rage quit and abandon, still get people that dont speak a lick of your language so you cant communicate for shit, and can get same results as pubs.
I personally never play ranked because I think its a stupid concept, but thats just my opinion.