Before we started this post we expected a 1N4148 of any flavor to have <4pF capacitance and <4ns reverse recovery based upon many decades of use, despite all the prior discussion and arguing this hasn't changed, as we still consider a 1N4148 to fit within 4pF and 4ns, and frankly that's all that matters here at the Labs!!
I can appreciate that way of working. You're expecting 1N4148 diodes, to behave with reasonably 'tight' specifications, as mentioned above. Which means that when it is designed into production units. They will behave quickly enough to NOT allow inputs to be potentially (ignore pun) damaged, because the reverse recovery time was too slow, or not allow the full bandwidth capability, again, because of performance/capacitance issues.
So, from that point of view, they are NOT 1N4148 spec devices, and so need to be kept away from 'real' 1N4148's. I.e. put in the junk component pile, or similar.
Others (including me), who say use the manufacture's datahseet, are still right (in some senses). But its characteristics, are more like a 'substitute' slightly/partly equivalent 1N4148 part, rather than a close equivalent one.
Ridiculous? Don't think so!! Not turning anyone into anything, we'll let them do that by themselves, yourself included 
Yes we misspell often, certainly not the first nor the last time. However, we don't spew out a bunch of misinformation as has been shown, and frankly don't have the time nor patience for this kind of BS.
Well, in that case, let me throw criticism(s) back at you then.
Your measurements, are showing perhaps two datapoints (test diodes), that you tested. But the real issues, if you go into mass production with these devices. Is that, that ONLY represented a particular batch (in all likelihood). The real $64,000,000 question, is how far can the worst possible such diode, be. Which is still able to get through all binning, testing by the manufacturer, followed by any binning/testing at your (production) end.
That is why/where the actual datasheets come into play.
I.e. Although a couple of the test diodes (from a better manufacturer of 1N4148's), may meet your 4pF and 4ns recovery measurements. That doesn't necessarily mean, every single one, supplied for all your production runs, will.
So your tests, are only really part of the solution to keeping your circuit design and products, of reasonable or better quality.
Or to put it into different words. Your measurements, only really gave you some limited typical values, rather than the real/true maximums, that apply to those components. Which could be a lot worse than what you measured, especially across different batches and/or much larger quantities of those diodes.
In some cases, real problems with the components, don't actually show up until significantly higher (or lower) temperatures, are involved. E.g. Leakage currents, can significantly be connected to the junction temperatures.
So your testing was rather limited really.
EDIT: But in all fairness to yourself. I can't really complain. You happened to test a couple of samples, of what were supposed to be 1N4148's (in your perception). On finding out they weren't (so called standard 1N4148's), you decided to report your findings, here in this thread. My criticism is therefore fairly unfair, as a couple of outliers, are enough to spot problems with those diodes.
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