*Display
HTC Sensation : 4.3-inch SLCD 540 x 960 pixel resolution [Gorilla Glass]
Samsung Galaxy S 2 : 4.27-inch Super AMOLED Plus 480 x 800 pixel resolution [Gorilla Glass]
Android 2.4 will support higher resolutions apparently.
*Processor
HTC Sensation : 1.2 GHz Qualcomm MSM 8260 Dual-core
Samsung Galaxy S 2 : 1.2 GHz XMM6260 Dual-core
Not sure theres much in that tbh
*Camera
HTC Sensation : 8-megapixel back with autofocus, dual-LED flash, VGA 1.3-megapixels front
Samsung Galaxy S 2 : 8-megapixel back with autofocus, single-LED flash, 2-megapixel front
Sensation wins for the main camera
*RAM
HTC Sensation : 768 MB
Samsung Galaxy S 2 : 1024 MB
More RAM in the SGS, but it depends on the overhead of the samsung UI
*Internal Memory
HTC Sensation : 1 GB
Samsung Galaxy S 2 : 16GB
1GB, upto 500 apps. How many more will you be installing?
*Weight
HTC Sensation : 148 grams (5.22 ounces)
Samsung Galaxy S 2 : 116 grams (4.09 ounces)
Yes all that cheap plastic makes samsung a bit lighter
*Size
HTC Sensation : 126.1 x 65.4 x 11.3 mm
Samsung Galaxy S 2 : 125.3 x 66.1 x 8.49 mm
Meh
*Battery
HTC Sensation : 1520 mAh
Samsung Galaxy S 2 : 1650 mAh
Depends how each device uses battery and the volting of the kernel really. A 500 bhp car is not necessarily faster off the mark than a 450bhp car
the 1Gb of space...on such a powerful phone. it's a real shame. (which will get cut down to 700 or 800 once android and sense is on there)
Battery is smaller than the GSII and processor of the sensation is based off the last generation A8 meaning less power and less power efficiency (with my desire ATM, i'm having to turn off all the cool "connectivity" stuff that I love about android coz my battery won't last.
the screen is qHD which is supposed to be amazing but Super AMOLED PLus has 50% increased sub pixels giving the appearance of more pixels.
Android is also native to 800 x 480 res, not qHD so apps are going to stretched (they will be update of course but how long will that take) it will only degrade the beauty of the 4.3" screen.
and for me storage space is the big one because it's not enough where as GSII has 16GB, 11GB your you to use and an extra 2GB for apps alone.
And lastly is the RAM which is approx 500-550MB when sense is on there, and apparently it's a older type of RAM. IT just seems a shame to bottle neck the 1.2Ghz power.
Well RAM and processing are 2 different things
Finally my last issue is that Sense 3.0 is very UI heavy meaning it's going to be using the GPU a lot more and seems very battery-draining. And there's a locked boot loader so your not going to be able to change it any time soon.
I mean the choice is yours depending of what type of user you are, but internally, (even if the rumours of the Sensation having 16GB internal memory) out-competes the Sensation.
Just seems the GSII will last me well over a year, whereas the Sensation will last a year at most before it lags and gets slow.