You have to ignore every team with which Vegas had side deals in place to take a specific player.
ANA: N/A
ARI: maybe Connauton, but then again, not much of a loss given their other picks
BOS: they crushed it with the Miller pick
BUF: nothing of significance out there anyway, even though they were only agreeing upon leaving Ullmark alone.
CGY: Engelland was picked for non-hockey reasons and still worked out. Funny, huh?
CAR: N/A
CHI: N/A
COL: Soderberg might be the first true miss they had in terms of ability, but they did pick a bunch of forwards of his caliber anyway. Moreover, his contract might have been the breaking point here.
CBJ: N/A
DAL: Pateryn belongs to that 'woulda been nice' category of players who would have been good additions, but not much of a loss there either.
DET: Ouellet, see above.
EDM: Khaira should have been the pick here. Being associated with Reinhart is just sad at this point.
FLA: N/A
LA: Getting McNabb from a team who protected four D anyway was a coup.
MIN: N/A
MTL: pretty much anyone would have beaten Emelin, but seconding the Hudon nomination here. Davidson would have worked too.
NSH: Neal was the BPA without question.
NJ: Oh, the irony... Smith-Pelly was available for Vegas. Must mention him here for reasons that are obvious.
NYI: N/A
NYR: a triple miss of Grabner, Fast and Raanta here. Now, Raanta's career path would have been a different one with Fleury in the way, but Grabner and Fast would have been godlike fits in Vegas.
OTT: Methot was likely the BPA, and even if you preferred Wideman over him, they managed to convert him into a second, so little to no loss there.
PHI: Bellemare did contribute to a decent PK unit, if I am not mistaken. Again, a case of there being so little difference between the players that it is hardly justifiable to question Vegas' results too much.
PIT: N/A
SJ: Another case like Pateryn/Connauton/Ouellet. Dillon is a good one, but how much better off are the Knights with him there?
STL: not questioning this one at all.
TBL: N/A
TOR: Leipsic was probably their best bet at getting anything more than replacement level impact out of Toronto.
VAN: They could have picked anyone making ELC money and been better off than with Luca Sbisa in the fold.
WSH: a murder of a pick from Vegas.
WPG: N/A
So, by my count, there were no more than five teams from which the Knights could have clearly gotten more than they did (NYR/COL/MTL, also VAN), and a handful of close calls. Overall, they did a terrific job even in hindsight.