Better FPS in Bad Company 2 With High Resolution?

I wasn't sure which board to post this in, so I put in here since I have a Asus G51vx-RX05

I decided to hook my laptop up to my 1080p 37" LCD TV with a HDMI cable. When I selected 1080p the image was too big for the screen so I resized the resolution to fit the screen using the nvidia control panel option.

I loaded up BC2 and selected the custom resolution it created, and joined a full server Ata Desert. The game looked amazing, and for some reason it seems to be running even better than what it ran at when I used the laptops native resolution of 1366*768? My fraps were reporting 40-60FPS, so I started a benchmark. The game seemed to be running much smoother, even though it doesn't run bad when I just playing it on my laptop screen.

I did notice that my GPU was being utilized a lot more than usual, and the fan was running full tilt almost the entire game. I hit a max GPU temp of 100C, when I usually hit 89-92C.

These are the settings I run the game with:

[WindowSettings]
Width=1832
Height=1038
Fullscreen=true
RefreshRate=60
VSync=false
[Sound]
Quality=low
VoipEnable=true
SpeakerCount=0
[Graphics]
Effects=medium
Soldiers=medium
Vehicles=medium
Overgrowth=medium
Undergrowth=medium
StaticObjects=medium
Terrain=medium
Shadows=low
Bloom=false
HSAO=false
MSAA=0
Water=low
MainQuality=custom
Texture=high
DxVersion=auto
Aniso=2
Detail=medium
RenderAheadLimit=2
Fov=65
v=55

Frames, Time (ms), Min, Max, Avg
21953, 420146, 0, 125, 52.251

I also have an upgraded CPU from the P7350 to a T9900 OC to 3.3ghz

Is it possible that using the higher resolution caused my GPU to be more fully utilized and resulted in better performance?