Hmm.....
I was playing a game yesterday as Kalista with Alistar, Zed, Irelia and Sion (So a pretty mobile team) against a team of Caitlynn, Brand, Morgana, Warwick, and Nasus. Me and my friend were duoing bot lane and we were in a skype call. We managed to get pretty fed off of their Brand support and Caitlynn simply because I'd dodge every one of their skill shots in a fight. I managed to get a 1v5 penta kill against them after they burned WW ult and the little cc they had on my Zed. It was then that it hit me just how strong Kalista's passive was. And sure I was pretty fed, but theres still no reason I should be able to kite around 5 members of there team and kill everyone of them.
The whole game I witnessed us misplaying things, for instance: For some reason my ult didnt work half the time and Alistar went the wrong way 4/5 times (I was in a call with him and he was getting pretty frustrated about it), Alistar missed 4 of his combos and knocked back enemies more than he knocked them up. Zed would ult someone with Zhonyas, Brand and cait would get a pick on someone roaming through their jungle, Sion would miss his ults plenty etc. But we still crushed them. Every team fight came out with us WAY AHEAD. Now, I'm not a rocket scientist, but I don't have to be to notice that the only difference between the two of our teams was that our team was way more mobile. Something needs to change before teams like mine (except instead of Sion lets have a Lee Sin or a Vi or Khazix) are the only teams that win.