It's impressive that he shoots as well as he does from deep, but honestly I think this chase is mostly a reflection of the fact that he's taking nearly eight threes per game.
Ray took 8.4 the year he set the record. You've gotta take a lot to make a lot, but I'd say shooting 45.5% at that kind of volume makes it even more impressive.
I agree. You hear people try to argue that Nash or Dirk are the best shooters of this era with their pretty percentages. And lack of volume doesn't take anything away from guys like Nash, Dirk, and Bird. They could be better shooters than Ray for all anybody knows. But they can't say they're the best in-game shooter ever like Ray can. They don't have that much proof.
As for Curry, if he breaks the record I don't think I can quite say it was as impressive as when Ray did it. Not even taking pace into consideration, Ray didn't have a down low presence to draw in the defense, let alone a beast like David Lee who can triple threat and cause a double team (also more than willing to pass back out with 3.4 assists a game). Ray on the other hand was the one getting double teammed with bigs like Wilcox, Radmanovic, Collison, Petro, Reggie Evans, and Mikki Moore. It's also fair to say if born two inches shorter and played PG with a green light for pull-ups he would have taken a lot more 3s.
Curry was assisted on 43% of his jumpshots. He created 57% of his made jumpshots on his own. Ray (in his career 3P made year) was assisted on 56% of his jumpshots. He created 44% of his own jumpshots. This could be because he wasn't a point guard (like you mentioned) but pulling up for a 3P isn't exactly easy! :p I'd say Step Curry probably took harder shots than Ray did in their respective record years.
That's an interesting argument. Ray not playing point certainly has a lot to do with it, but Curry lacking a playmaker other than Jarret Jack. It's a testament to his ability to recognize space. But Ray Allen though had to face more defenses oriented towards him alone (aside from Lee, Thompson and Barnes are both good enough shooters to keep their defenders home), and had to fight a lot harder to get the space he'd need, and rely on a competent PG, which he had for a lot of his time in Milwaukee at least, together him the ball in perfect timing off screens.
However in Seattle, didn't have that luxury. He did have a peaking Rashard Lewis though to help create space and an elite pick-setter in Collison.