And CEs are not better than pios. Maybe in combat they are barely better, but then there's something called the teller mine. The CEs special toy (demo) was nerfed into uselessness
Pios aren't BARELY better in combat, they are WORLDS better in combat. Pios have an actually useful DPS that allows them to singlehandedly force off team weapons (with the risk of wipe) and 1v1 certain mainlines when they ambush (infantry sections yo). "Oh but Combat Engis are better at long range" Oh yeah lets see that AMAZING 3.5 far DPS that entire squad provides (assuming they don't have a minesweep/flamer), thats less than a single model of Obers does, and a bit more than a single Tomy in cover has.
But you know, negligible amount of long range DPS is more useful than the ability to flank and wipe teamweapons / force off mainlines.
Seriously.