Seriously? Cersei? I'm sorry TFQ, I just don't get it, my feelings about her are pretty much summed up on page 2 of this thread.
I am however, right with rudycrab on the stupid thing. Cersei thinks she's clever - oh how she thinks she's clever - but in truth isn't, truly truly isn't clever in the slightest.
The fact of the matter is that she is a lady in what
is very much a man's world. If she wants to form a little niche for herself in this society then she needs to use her brains not her *ahem* womanly assets which she seems to feel is the best way to get anyone, male or female because she's obviously so irresistible to everyone.

She also needs to stop wanting to be her father, afterall, he didn't prove to be so bloody clever in the end did he? (GO TYRION)
As for her father treating her differently to Jaime making her the way she is - absolute poppycock (???? have never used that word before) as far as I'm concerned. Most women in families as powerful as the Lannisters and some less powerful were brought up in the exact same fashion and they seemed to turn out ok, for instance Margaery Tyrell, although you could argue she had the Queen of Thorns, you could also argue that Cersei never made use of her aunt who is obviously more than she appears to be. Also, no-one in that famliy was treated worse than Tyrion and apart from him doing a little
Patricide, he turned out ok, if a little cleverer, twisted and just a wee bit bitter than most people!
You see, Tyrion made the most of what was around him and took advantage of what he could, Cersei on the other hand was quite happy with her lot when she thought she'd be marrying the future King Targaryen and bearing his children but when that all changed and was taken away from her, her spoiled brat nature kicked in and just look where she is now!
Also, the little thing about Arya being more fortunate as she was allowed to act like a boy. Uh-uh, no way. Catelyn & Sansa (Grrr) and that Septa woman were constantly complaining about Arya's choices in life and trying to make her 'a lady' but Arya is just too headstrong, willful and has a wily little brain so doesn't conform. Cersei is none of these things, no matter how hard she tries. Even Ned - albeit to appease Catelyn - tried to make Arya 'see sense'. It wasn't until he actually sat down with her to discuss Needle that he saw that this is what she wanted and was also probably reminded a little of Lyanna that he relented and arranged for tuition with Syrio.
I could go on but it'd just get even more boring than it is already.
Quote from Arya Underfoot Brienne, Asha, Arya, Daenerys, Maege Mormont, even the Queen of Thorns- those are women who have broken the mould. They're real players in the game.
Amen to that and sorry for the ramble everyone!
xx