I- What?
What in the hell are you talking about?
Syndra is perfectly balanced. I never see her except when I play her, but when I do, I do as good if not better than most of my other middles. She is slightly more difficult to play then other AP mids because of her lack of any reliable escape mechanism, but the slow on her W and the stun on her e/q is strong enough to pull her out of almost every gank situation.
She can easily 100-0 a carry in a teamfight with ease, and if she can't get to a carry, she can deal massive damage on the sides and wear down their tank lines.
She can dominate any lane with ease with great burst and a great finisher ultimate.
Her damage isn't low, nor is it stupid high- it's fine. Just like the rest of syndra.
She does NOT **** on every single person in game with ease, but does that mean syndra is weak?
No.
So stop saying that, pick her up, build her right, and play her right, and you'll realize crying that your cries of UP are unfounded and worthless.
(I'll play any of you as syndra and show you i'm not just talking out of my ass if you prefer.)