Yes, i've noticed the slightly high random write accesstime. Since the drive has pretty high random write IOPS, i'll speculate it's because of write attenuation in cache. That the controller holds the files in cache for a little while (a few 100ms) and writes them as a bigger sequential block while remapping the LBA->physical table at the same time. This could also be the reason the 128GB version has lower random write IOPS than the 256GB, since the 256GB has higher 4KB random write than the 128GB has sequential write.
140MB/s = 35K IOPS.
I've noticed the same tendency with SandForce numbes, but it seems SandForce holds data in cache for a shorter time and gets less lantency overhead on its write attenuation.

Steve, you're not the first one. I made a pun with "no I in GullLars", like "no I in team". It's a bit dry humor, so i understand if you didn't get it