If you read the linked SmallNetBuilders article you will see what the problem is:Quote from Landis82:
It is interesting to note that "SmallNetBuilders" article shows the Linksys Gigabit Security Router with VPN ( the RVS4000 ) as by far and away the leader in "Total Simultaneous Throughput" at 526.
But take one look at the "reviews" on NewEgg for this router and you will more often than not, hear people that are totally disgusted by this piece of equipment and have turned it into a "paperweight" after about one week of service.
http://www.smallnetbuilder.com/component/option,com_chart/Itemid,189/chart,121/
http://www.smallnetbuilder.com/content/view/29910/51/1/3/
Download speed tends to be more important than upload speed so its the 14Mbps number that is the problem.The upload (LAN to WAN) throughput of 516 Mbps(!) is a new high for the SmallNetBuilder test bench, and was obviously obtained using gigabit connections on both WAN and LAN sides. But the 14 Mbps download (WAN to LAN) throughput, while sufficient for many cable, T1 and DSL connections, isn't on par with latest-generation products like the Buffalo WZR-AG300NH that provide >100 Mbps wire speed for both up and download.
Your point is quite valid though - if the reviews say that various features (that you care about) don't work, then that is enough reason to steer clear of a router, performance doesnt mean much if the thing doesnt work or is unstable.