Why my SSD firmware values dropped down after i update ??

hello , I wanna tell something about , i bought my Sandisk Extreme 240gb new and I tested aand saw that my values are a bit low but after I updated my firmware, the values dropped more in my opinion, can you please check the link below and tell me your opinions ? The factory default firmware was v201. After i did update : Current firmware version is v211.

The values before I do firmware update : http://imageshack.us/photo/my-images/692/deerler.jpg/

The values after I did firmware update : http://imageshack.us/photo/my-images/94/degerler2.jpg/

Waiting your comments on this !

the speed you are seeing is normal. advertized speed is mesured using compressable data. looking at your ATTO benchmark you are within expected speeds.