The write speeds have improved slightly; don't expect an enormous jump from switching to AHCI (although I might have hoped for a slightly higher result
). From what I can see you have a Kingston SSDNow V100 128GB SSD? It's listed as 250 Read/230 Write, so your read speeds are fine but your write speeds are low.
It looks like the latest firmware is installed (firmware version D110225a); do you have TRIM enabled?