The author is complaining out of context on a couple of points here:

1) The B820 came out 1.25 years later than the B940. So, it's not hard to see that maybe Intel decided in that timeframe to add VT-x support.

2) None of the K-series CPUs support VT-d. For some reason, VT-d and overclocking are not compatible. This would have been more noticeable if, for example, the author had compared the i7-4770K to the i7-4770, not the i5-4570. The same distinction is there between the i5-4670 and i5-4670K.

3) The table is organized in a misleading fashion. Why put the weakest CPUs in the center except to make proper trend be intentionally disrupted

After fixing or striking these issues, this isn't even an article worth writing because the features suddenly make sense.