Where did you get that information? :O
HTC Desire S and Xperia Ray have Adreno 205
LG Optimus Black and Motorola Defy have PowerVR SGX 530
Nokia 701 has Broadcom 2763. (I dont think 2773 exists)
And all of them support Open GL ES 2.0. The broadcom is a just released, while the other 2 have been there since a looong time. The 530 on my defy was announced back in 2005. So, broadcom uses a new tech to produce the chips, resulting in lower power consumption (probably) than the others. On GPU power, they are all evenly matched(again.. probably cant say without actual benchmarks).
But the big difference comes in the CPU. Broadcom CPU is based on ARM11, while all the others mentioned here use ARMv7 architecture. Obviously it would be far less powerful (though the lite Symbian OS wont need that much power). Your claim of irony... is actually the other way around.
One bright thing about the Broadcom chipset is that it claims to be able to decode as we as record at 1080p. Nokia 701 should have added that feature. Not sure y they are restricting it to only 720p.
You are welcome. True.. Super Amoled screens are present on higher end devices. One thing you missed to notice is that Nokia CB on 701 is not AMOLED(as on C7 or N8). Its an IPS panel. Its blacks are certainly not true blacks. Its blacks are brighter than the ones on Motorola Atrix... which doesnt have anything in its display to highlight. It definitely will consume a lot of battery. (Check preview at GSMAmrena... Its got the exact numbers). Its the brightest no doubt. And sunlight legibility is among the best, but it will not be very power efficient.
For NFC, USB OTG, may be its personal preference, but for me its quite useless. NFC is the future and its gonna change our lives in a big way... but its a far off future for India.
As you said, some ppl might use its USB OTG with pendrives on trains or other places... Its a good thing to have. Just personally its not something i would have used a lot.
Motorola Defy comes at around 14K now. So i would suggest it over Nokia 600 at 12K. (unless u would be using the unique features that only Nokia provides)
If you do... you can try and get C7. Its priced below 15K i guess. Though that lacks NFC.