I think part of that is due to his limited hockey IQ and part of it to him kind of deferring to Sid/Geno/Kessel when he's on the PP. He second guesses himself on the PP, because he thinks he's got to get it over to one of those guys, instead of taking control of the PP as the QB.
Letang looks dangerous in the offensive zone at 5 on 5 because he doesn't defer as much. He'll go where his natural ability takes him, and be more confident about making a play. On the PP, it's like his mind is stuck in "gotta pass to one of the other guys" mode.
I don't know how to describe him on the PP anymore. He's a massive contradiction.
You see him look like he's overthinking things and you see him clearly not think about what he's doing. You'll see him deferring and then you'll see him ignore Malkin to shoot into some shins or be pissy when he doesn't get the puck passed to him. I've seen him described as trying to keep up with Crosby and Malkin, but you could probably say he has delusions of taking over the PP. He's a mess on the PP and I don't think there's one specific problem to address.
I've been thinking about his season so far. We're at the point where rusty isn't the right word anymore. Still getting his confidence back, refining himself or struggling to find a groove may be more accurate. It's not surprising and it's still Letang's "process" when coming back from injury. His skating looks fine, his shot is as inaccurate from the point as ever and it's nothing new on the stupid front. Unless it's negligible to see but has a serious effect on him I think he's physically fine and we're seeing him coming back from a serious amount of time off.
His TOI is f***ing stupid, though.
STL: 26:05, 28 shifts (OT)
CHI: 23:43, 30 shifts (blowout)
NSH: 25:59, 33 shifts (Cole injury)
WSH: 27:09, 30 shifts
TBL: 25:38, 27 shifts
FLA: 28:20, 30 shifts
NYR: 27:01, 31 shifts (OT)
FLA: 26:18, 29 shifts
TBL: 22:46, 28 shifts (blowout)
EDM: 27:58, 32 shifts (OT, Schultz went down in P1)
WPG: 30:12, 30 shifts (OT, down 2 regular D)
He has the second highest ATOI of his career immediately coming off a serious injury.