Please try to play the game again without drama. W:A is a better place when problems like this can be solved outside of complaints with respect for each other. There wasn't even a huge advantage or disadvantage with the placements dienadel85.
In any case, DarkOne is right, you have a right to report this if you want.. but do you really want to? Is the win worth it vs the bad that comes from making him angry?
And r3spect, if you really did have screenlag like you said, you can't automatically assume your opponent will rehost. You have to ask nicely and realize that screenlags are your fault, so try to handle the situation better next time.