The Vancouver Canucks have the highest goal differential per game played by a team in conference finals, with 1.27.

highest margin of victory per game by a team in a conference finals series

TEAM	GP	DIFF/GP	DIFF	SERIES	W	L	T	OTL	PTS	PTS%	G	GA	PP%	PK%	S/GP	SA/GP
Vancouver Canucks	15	1.27	19	Conference Finals	12	3	0	0	24	.800	54	35	46.5	60.5	32.13	35.87
Calgary Flames	18	0.94	17	Conference Finals	12	6	0	0	24	.667	59	42	21.4	88.2	31.56	25.44
Florida Panthers	11	0.82	9	Conference Finals	8	3	0	0	16	.727	30	21	14.6	87.0	34.00	36.27
Edmonton Oilers	48	0.79	38	Conference Finals	29	19	0	0	58	.604	206	168	21.5	76.3	28.96	30.00
Vegas Golden Knights	16	0.75	12	Conference Finals	9	7	0	0	18	.563	43	31	17.0	75.6	30.00	29.75
Nashville Predators	6	0.67	4	Conference Finals	4	2	0	0	8	.667	19	15	9.1	88.9	33.33	31.17
Pittsburgh Penguins	49	0.51	25	Conference Finals	28	21	0	0	56	.571	148	123	17.9	86.3	31.90	29.22
New York Islanders	27	0.37	10	Conference Finals	15	12	0	0	30	.556	88	78	25.3	81.4	28.00	30.33
Detroit Red Wings	57	0.32	18	Conference Finals	30	27	0	0	60	.526	161	143	17.3	84.4	30.19	25.60
Los Angeles Kings	24	0.29	7	Conference Finals	13	11	0	0	26	.542	75	68	18.6	85.1	31.96	29.25
Boston Bruins	42	0.29	12	Conference Finals	24	18	0	0	48	.571	141	129	21.8	82.8	29.88	29.31
New Jersey Devils	45	0.24	11	Conference Finals	26	19	0	0	52	.578	122	111	16.9	81.9	27.24	27.40
Washington Capitals	17	0.06	1	Conference Finals	8	9	0	0	16	.471	42	41	17.7	83.6	29.76	26.47
Tampa Bay Lightning	47	0.02	1	Conference Finals	25	22	0	0	50	.532	132	131	26.5	82.7	30.09	30.57
Montreal Canadiens	39	0	0	Conference Finals	19	20	0	0	38	.487	104	104	15.6	86.6	28.49	26.41
Anaheim Ducks	28	-0.07	-2	Conference Finals	14	14	0	0	28	.500	75	77	12.3	83.5	32.68	30.61
Ottawa Senators	19	-0.16	-3	Conference Finals	10	9	0	0	20	.526	41	44	9.5	84.9	28.63	28.63
Philadelphia Flyers	53	-0.17	-9	Conference Finals	27	26	0	0	54	.509	141	150	19.1	73.1	25.75	28.42
New York Rangers	42	-0.21	-9	Conference Finals	17	25	0	0	34	.405	109	118	21.1	81.2	29.90	29.83
Buffalo Sabres	23	-0.3	-7	Conference Finals	10	13	0	0	20	.435	59	66	13.2	81.4	26.48	29.17
Colorado Avalanche	52	-0.31	-16	Conference Finals	25	27	0	0	50	.481	134	150	19.9	75.8	27.62	31.48
Dallas Stars	46	-0.37	-17	Conference Finals	22	24	0	0	44	.478	109	126	17.6	84.1	27.93	29.02
St. Louis Blues	24	-0.54	-13	Conference Finals	10	14	0	0	20	.417	69	82	18.1	73.5	28.71	29.29
San Jose Sharks	27	-0.59	-16	Conference Finals	9	18	0	0	18	.333	69	85	20.0	76.0	29.48	28.30
Chicago Blackhawks	63	-0.65	-41	Conference Finals	27	36	0	0	54	.429	194	235	25.6	77.4	29.62	32.37