The Vegas Golden Knights had the highest goal differential per game played by a team in 2020-21, with 1.21.

Interpreted as:

highest average margin of victory per game 2021

	TEAM	DIFF/GP	DIFF	GP	SEASON	W	L	OTL	PTS	PTS%	SOW	SOL	G	GA	PP%	PK%	S/GP	S%	SA/GP	SV%
1	Golden Knights	1.21	68	56	2020-21	40	14	2	82	.732	1	2	190	122	17.8	86.8	32.66	10.4	27.27	.920
2	Avalanche	1.16	65	56	2020-21	39	13	4	82	.732	0	1	197	132	22.7	83.1	34.59	10.2	25.41	.907
3	Hurricanes	0.73	41	56	2020-21	36	12	8	80	.714	4	2	175	134	25.6	85.2	32.04	9.8	28.25	.915
4	Maple Leafs	0.68	38	56	2020-21	35	14	7	77	.688	1	0	186	148	20.0	78.5	31.27	10.6	27.82	.905
5	Penguins	0.68	38	56	2020-21	37	16	3	77	.688	3	1	193	155	23.7	77.4	30.07	11.5	29.98	.908
6	Panthers	0.66	37	56	2020-21	37	14	5	79	.705	1	2	188	151	20.5	79.8	34.91	9.6	30.04	.910
7	Lightning	0.63	35	56	2020-21	36	17	3	75	.670	1	2	180	145	22.2	84.2	30.21	10.6	28.27	.908
8	Bruins	0.54	30	56	2020-21	33	16	7	73	.652	4	2	164	134	21.9	86.0	33.32	8.8	27.07	.912
9	Oilers	0.52	29	56	2020-21	35	19	2	72	.643	0	0	183	154	27.6	82.5	29.89	10.9	30.66	.910
10	Islanders	0.48	27	56	2020-21	32	17	7	71	.634	4	3	152	125	18.8	83.7	28.98	9.4	28.39	.921
11	Capitals	0.48	27	56	2020-21	36	15	5	77	.688	3	2	188	161	24.8	84.0	29.41	11.4	28.79	.900
12	Rangers	0.38	21	56	2020-21	27	23	6	60	.536	1	2	176	155	20.7	82.2	28.70	11.0	29.71	.907
13	Wild	0.38	21	56	2020-21	35	16	5	75	.670	1	1	180	159	17.6	80.7	28.30	11.4	30.45	.907
14	Jets	0.32	18	56	2020-21	30	23	3	63	.563	0	2	170	152	23.0	80.5	29.66	10.2	30.59	.911
15	Stars	0.14	8	56	2020-21	23	19	14	60	.536	2	6	156	148	23.6	79.1	30.34	9.2	27.11	.903
16	Blues	0	0	56	2020-21	27	20	9	63	.563	2	3	167	167	23.2	77.8	28.96	10.3	29.82	.900
17	Predators	-0.05	-3	56	2020-21	31	23	2	64	.571	5	0	151	154	17.6	75.6	29.98	9.0	31.30	.912
18	Flames	-0.09	-5	56	2020-21	26	27	3	55	.491	1	1	155	160	18.3	80.2	30.16	9.2	28.16	.899
19	Canadiens	-0.13	-7	56	2020-21	24	21	11	59	.527	1	3	158	165	19.2	78.5	31.18	9.0	28.20	.896
20	Coyotes	-0.43	-24	56	2020-21	24	26	6	54	.482	3	2	150	174	20.8	80.8	27.46	9.8	30.46	.898
21	Blackhawks	-0.45	-25	56	2020-21	24	25	7	55	.491	2	2	159	184	21.7	76.8	29.20	9.7	33.71	.903
22	Kings	-0.48	-27	56	2020-21	21	28	7	49	.438	1	1	142	169	18.9	83.6	28.34	8.9	31.18	.903
23	Senators	-0.61	-34	56	2020-21	23	28	5	51	.455	2	1	155	189	15.5	78.9	29.70	9.3	32.13	.895
24	Flyers	-0.66	-37	56	2020-21	25	23	8	58	.518	3	4	160	197	19.2	73.1	30.21	9.5	29.21	.880
25	Canucks	-0.7	-39	56	2020-21	23	29	4	50	.446	3	1	148	187	17.4	79.8	29.09	9.1	33.39	.900