a couple of corrections from just this page (not going to go back and read the whole thing)
1: there are A LOT more than 40 18Ds. Each ODA has at least 1 18D, if you think there are only 40 ODAs in the entire army you're watching too much Rambo.
2: ALL ranger medics go through the W1 course, and they have been required to do so since at least 2005 (since that is when the army switched the medic mos from 91W to 68W)
http://www.soc.mil/75th Ranger Regiment/Perm_Party_RMED_Application_06.pdf
3: If by "medics pulled from the BSB" for CA you mean for assignment just for deployment, then yes that happens a lot. However active CA (which is an SOF btw) does have their own medics who go through the Civil Affairs Medical Sergeant course, for which W1 is a prerequisite
https://www.atrrs.army.mil/atrrscc/prerequisites.aspx?fy=2013&sch=331&crs=300-F20&phase=&clsflag=
4: 18Ds are most certainly trained to the paramedic level and they receive their paramedic cert
Now to the original question- CLS is not a very good course, having taught it to at least a 1,000 students (if you include recert classes) as a medic I can honestly tell you that I would consider that little 5 day course a HUGE success if everyone of my students could put on a tourniquet, treat a pneumothorax, secure an airway, and know what shock looks like at the end of it. CLS can do certain procedures an EMT cannot (needle decompression for example), however CLS is not taught everything that an EMT is. Mainly because we do not have patients with diabetes/CHF/COPD/cardiac issues/seizure issues/stroke issues/or other issues that old/chronically sick/unhealthy people have. Their patients are all in the military. They're all relatively young and relatively healthy, and for the most part their entire demographic of medical emergencies are trauma based. Also CLS are not meant to work alone, their purpose is to either assist their medic when available (like BLS assists ALS), or keep a patient alive until the medic can get to them (like BLS would with a patient while waiting for ALS). It would be great to send all of my CLS (meaning the entire platoon) to an EMT-B course so they could learn more, however I can honestly say that the only things I've ever needed a CLS to do was secure an airway, treat pneumothorax, and stop bleeding. Everything else is either something that can wait 1-2 minutes for me, or something that can't be treated with the gear a military medic carries anyway.
As far as the list smokemedic listed-
CLS has no civilian cert, and gets only 5 days of training
an EMT has a civilian cert
a 68W is certified as an EMT and has additional 68W training
Comparing paramedic to 68W- 68W can do a few things a paramedic cant (depending on unit, every unit has a different provider and therefore a different scope, but just going off of my old unit vs paramedic national scope) and their protocol is most likely where ITLS will be in 5 years, however they are not trained on the medical emergency side that paramedics are.
ALL special operations medics go through the W1 course, which includes paramedic school, then follow on training.