To his own disadvantage too. Branny was too good for the AHL going basically PPG as a defenseman, not quite good enough to stick in the NHL two seasons ago, and then barely passable at the start of last season before blooming after his injury.
So he was stuck in no man's land for development, and when he was slotted in as a 19 and 20 year old, you could see how skittish he was despite all that poise and skill we were advertised. Note that Sanderson is 20 and 4 months, to Brannstrom's 19 and 1 month his first season. Sanderson is obviously a notch higher in talent if you compare Brannstrom's 20 year old season last year to Sanderson's current start.
Meanwhile Thomson and JBD have largely been bad enough to be developed in the AHL, with the team having just enough depth to keep them down there. And note here, that JBD is 6 mo younger, given much more leash, and Thomson 1 year younger. Now imagine JBD in Brannstrom's role 1.5 years ago.