Yea there's really no in-game precedent for Jenners with ECM.
Nor are there any current Atlai with ECM.
Nor any precedent for Commando having ECM (though I think I'm ok with them having them)
Stick it with the Ravens, the 2X and the 3L since they make the most sense (the 4X having been "stripped and fitted for combat" and such)
By the canonical forwards-looking (3060s consideration) logic that the D-DC has ECM, the Awesome deserves ECM too (-9Q variant), the Cataphract (-4L variant), Hunchback (-5P variant) ... and that's just the research I could do on the fly.
There is no historical or canonical reason for a Jenner to have an ECM.
*EDIT* Also why the hell can a Raven-3L carry such a big engine? That breaks the formula being used for maximum engine size...
Edited by Kobura, 28 November 2012 - 01:29 AM.