[quote=Yog Sothoth]
I don't know about you guys but a Blue Lantern sucking away a Yellow Lantern's power that quickly especially someone as powerful as Sinestro seems a bit too powerful
[/quote]

"Fear Depletion: As fear is the belief of imminent demise, hope is the belief of imminent success. As such, Blue Lantern Rings are capable of depleting the energy of Qwardian Power Rings."

[url=http://dc.wikia.com/wiki/Blue_Lantern_Ring]Sauce[/url].