i think, result of matrax bench is much depending on how much space available on your flex and the phone conditions, i've try it on my phone, with same FW, same Flex, the different is, first time i try with space available only about 500kB it shows 131, but after i put an mp3 file for ringtone, so the space became about 200kB , the result shown a degradation, it became 122-127.
Yup just like Zolookas said before and I confirmed..
The more compact the flex is - the smoother the usage will be