As mentioned previously, a key difference between RESO and MITCP offrs was that RESO offrs were university students, whereas many or most MITCP offrs already had their degrees. Thus, by definition, MITCP offrs were already better educated (and, they usually bring real life experience into the equation, too).
Obviously, since the RESO crses were longer, it could be seen that RESO offrs were better practiced.
However, the bottom line is that it‘s perilous to make generalisations - plus, you‘re only basing your observations upon the offrs whom you‘ve met, and as far as I can tell most of your observations seem to centre upon your unit (engr) - thus, you should be cautious about tarring an entire segment of the offr corps based upon a narrow sample.
In the end, it‘s wisest to judge each individual upon their own merits (just like you‘d want them to judge you, rather than writing you off before they‘ve even met you ... but that‘s just my opinion)