No, it's proving to you that he can win his lane against players that are most likely worse than them. It doesn't have any bearing on whether or not you guys will be playing at the same level he does, be that higher or lower.

No one is better then anyone in this game it's just depends do you mess up a lot or not.You have 4 botten's in this game its q w e r its not skill at all its fun but not skill.If you think you are skill go play a fighting game or wow or fps games or sc2 those games take's skill to play.I am not saying league of legends its not a skill game but those games take all skill to be good in it ever sucks at this game its all about luck and if you mess up this tournament is ment for people who dosant mess up and who wants to join our rank tournament team.

I only play Singed top.

Another way to possibly recruit a mid would be to have him play normal matches with you guys, you can determine more this way based off his csing, mid harassment, roaming, team fighting, and so on. Just from the first match you can figure out if you would like the player to try out in a few more matches or not. But l agree with everyone else that a 1 v 1 will not be the best way to determine a new recruit. 1 v 1's is mostly just going to be based off who picked the better champ for early match.

Are you 18 yourself? My friends 6 year old brother could spell better than the OP post.

Another silly post.
Wins and losses = experience in the game just to let you know.
Also if your just going to have people play the one role, that's bad people should learn multiple roles.