Sgs2 is v-sync limited
The benchmarks showing the sgs2 being slower doesnt take into consideration that The Sgs2 like the original galaxy s is framecapped at a little less than 60 fps
because of v-synch. 60hz which is the natural vsynch rate of LCDs.
Should samsung remove the frame cap then there could be a fair comparison.
As mentioned earlier the mali 400 gpu is capable of texture compresion and is in fact fully opengl compliant.
Nvidia and PowerVr use their own proprietary texture compression routines which is why some gameloft games had to be rewritten a bit to accomodate the mali 400.
Its just how it handles alpha transparencies which isnt its fault but opengl es2
standard, which is also a reason why some games had to be modified a bit to factor in the mali 400 since most games are optimized for powervr, qualcoom snapdaragon and nvidia tegra.
Fear not since gameloft and other dvelopers are working on this issue they are just going to add code.
However its when playing 1080p Flash youll see that the sgs2 is doing it smoothly
while the sensation has lag when even just loading a flash heavy page.
There are numerous youtube videos showing this and i also saw this in person
when we compared a friends sgs2 to a sensation in loading youtube, engadget website, played flash games etc.
To make it even we used the same wifi source for both phones and turned off 3g, turned off all widgets , any app, both were optimized to run only the apps we tested like flash in browser, games etc.
The Sgs2 was really a dream to run.
The sensation was only laggy subjectively when both phones were side by side to be fair.
If the Sgs2 wasnt by its side you'd say the sensation was smooth also.
However the sensation just doesnt play 1080p flash very well its obvious.
The Sgs2 was very smooth with 1080p flash with just a few dropped frames from time to time which i think is due to wifi network congestion in the area we tested.
If only the sgs2 wasnt so expensive.