Windows 7 shorter battery life, I think I found the cause!

Question

I bought a new 2011 MBP 13" i5 last week with the intention of running Windows 7 x64 on it, only to find that the battery life was quite a bit lower than OSX. First of all, the 13" only has ONE Intel HD3000 graphics card, so don't bring up the inability to switch between two. I've been working on it for days trying to bring W7's battery life on par with OSX which I managed to do through power plans, disabling components I don't use such as Infrared, SD card, Bluetooth etc. I also disabled system sounds because I found that while Windows 7 does disable the sound card when not being used, it only does so after about a minute. So if you click a folder, the sound card powers up to make the click sound then stays powered for about a minute until turning off again. Every time you click a folder or whatever and it makes a sound, the card is going to power on for a minute. OSX disables its sound card after a few seconds, obviously saving more power than waiting 1 minute.
I have been using a program called BatteryBar which tells you the battery's real time discharge rate. It started off at about ~9500mW of power consumption with a fresh install of W7, and after my tweaking I got it down to about ~7900mW at idle which is pretty **** close to OSX's.
The Big Problem
After I got the consumption down to 7900mW at idle, all was fine and dandy. The problem arises when you put the system to sleep and then wake it up again, the consumption at idle won't go below 10,000mW!
After putting the system to sleep and waking it up, something is becoming a power hog and the total power consumption won't go below 10,000mW. That shaves about 2 hours off the battery compared to the previous 7900mW at idle, pretty much exactly what people have been reporting! It's not the backlit keyboard or the brightness, I have made sure of that. It doesn't appear to be the graphics card which I have set to the maximum power saving mode, and have even tried re-applying those settings after waking it up. I've tried disabling wifi and re-enabling it, make sure everything is set to power saving modes.. but it still won't go below 10,000mW until I reboot it.
If you reboot the system, the consumption goes back to the previous ~7900mW at idle, put it to sleep and wake it up and bam 10,000mW+ again. It's replicable every time. I am trying to figure out exactly which component is causing it... but it's not easy.

Answer 1

Every review over the years by major sites (Ars, Anandtech, Computerworld) regarding Windows Vista and 7 on Apple MacBooks have all stated that battery life was reduced but no one did measurements.
Do you enable and use hibernation instead?
Also Intel has a new feature but one which I think Apple has been using under OS X.
Seems like anything is going to rely on the SMC firmware.
Macs do not have  the same fan control and thermal sensor integration they have under Windows.
Similar case for graphic card performance.
So I think there are multiple issues and a few out of our hands.