My attempts at educating him a bit on these matters seemed to fall on deaf ears.
No, because you insist that a better trained unit would have acted the same, while I say that a better trained unit were they running the whole show would not have made the same call (and would not need 7 shots)
EDIT:
What you had in London were officers who may have had the training, but never had the real life exposure to the situation as we have not had any issues since the NI/IRA trouble (thankfully).
That is the same thing happening now, we have officers who may have the training, but do not have any real life experience doing the job.
The SAS all rotate in/out of the counter-terror role, so they are all front line serving troops and do the whole storm compound, find person, etc thing day-in, day-out.
The same argument could be made of many other police special operations around the world, however the likes of SWAT in America have to deal with more stuff daily (including school shootings, crazy armed guys, and so on)
Further more, if the special branch/operations folk are so good, how come the SAS have had to do their jobs previously, including during the Embassy and Prison sieges ... could it be perhaps that they are BETTER at it, due to (as I said) doing it day in, day out in warzones.