Yeah, given how pretty much every faction overview was basically "This unit is suuuuper strong because you can use All-Out Attack on it!" I'm guessing their mindset on the Oldblood was "Omg! +1 to hit? That's like, two All-Out Attacks! Most OP thing evar!" and the point cost got hiked up accordingly. The gauntlet probably added to it, despite it's utterly horrible attack profile. (1d6 attacks? Plan on only getting 1-2 most of the time...)
The Troglodon I'm convinced was entirely due to Kroak. He was the single most complained-about unit at the end of 2e, and aside from making killing him really random, they were also determined to nerf his spell range as much as possible. So having the cheapest monster in our army also be one that could channel Kroak's spells probably put him at the top of their nerf list.