I think you cannot trust in that review:
http://www.smallnetbuilder.com/compo...rt/Itemid,189/
Or it may be a firmware issue cause if you noticed the Linksys WRT320N is equiped with the slower BCM4717 CPU 354MHZ and is a better performer, just like WRT600N with BCM4705 300MHZ (very the same as BCM4704 from WL500GP) and it measures 164MB, in that review its considered better than RT-N16 and WRT320N, not possible...
Samba performance write is less than my WL-500GP? Don't think so.
Wait for OLEG firmware ;)

