can i get some clarification here?

i just played a match as top vs ... we end up winning... all while he is getting mad at his team and because we had teamwork that denied some kills... try to give him advice i'm the idiot... I don't understand what happened....

TLDR; "knew" the champ didn't play to the strengths built stupidly knew it was stupid build got mad for losing ...

http://s2.quickmeme.com/img/1f/1f42cb4f251c90d0a24e0eb3c5c302b2fd4b7606d60156eb9e56ca95967dd093.jpg