Yes there have been some seasons more dominant than Ovechkin was, but Ovi's claim to fame has been his number of high-end seasons, and the most rocket wins in history.
Since the 1977/1978 season (When Bossy came into the league) (went ahead and adjusted Ovi's 09/10 just like ya said):
| Season Start | Season End | Goal Leader | Goals | 2nd goals | % over 2nd |
1 | 1990 | 1991 | Hull Jr | 86 | 51 | 69% |
2 | 1983 | 1984 | Gretzky | 87 | 56 | 55% |
3 | 1981 | 1982 | Gretzky | 92 | 64 | 44% |
4 | 1999 | 2000 | Bure | 58 | 44 | 32% |
5 | 1991 | 1992 | Hull Jr | 70 | 54 | 30% |
6 | 2001 | 2002 | Iginla | 52 | 41 | 27% |
7 | 2007 | 2008 | Ovechkin | 65 | 52 | 25% |
8 | 1987 | 1988 | Lemieux | 70 | 56 | 25% |
9 | 2014 | 2015 | Ovechkin | 53 | 43 | 23% |
10 | 2008 | 2009 | Ovechkin | 56 | 46 | 22% |
11 | 1988 | 1989 | Lemieux | 85 | 70 | 21% |
12 | 2011 | 2012 | Stamkos | 60 | 50 | 20% |
13 | 2013 | 2014 | Ovechkin | 51 | 43 | 19% |
14 | 1980 | 1981 | Bossy | 68 | 58 | 17% |
15 | 1978 | 1979 | Bossy | 69 | 59 | 17% |
16 | 1989 | 1990 | Jull Jr | 72 | 62 | 16% |
17 | 1977 | 1978 | Lafleur | 60 | 53 | 13% |
18 | 2009 | 2010 | Ovechkin (*Adj/gp*) | 57 | 51 | 12% |
19 | 1985 | 1986 | Kurri | 68 | 61 | 11% |
20 | 2017 | 2018 | Ovechkin | 49 | 44 | 11% |
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| Season Start | Season End | Goal Leader | Goals | 10th goals | % over 10th |
1 | 1990 | 1991 | Hull Jr | 86 | 45 | 91% |
2 | 1983 | 1984 | Gretzky | 87 | 47 | 85% |
3 | 1988 | 1989 | Lemieux | 85 | 46 | 85% |
4 | 1981 | 1982 | Gretzky | 92 | 50 | 84% |
5 | 1978 | 1979 | Bossy | 69 | 40 | 73% |
6 | 1991 | 1992 | Hull Jr | 70 | 42 | 67% |
7 | 2011 | 2012 | Stamkos | 60 | 36 | 67% |
8 | 2009 | 2010 | Ovechkin (*Adj/gp*) | 57 | 35 | 63% |
9 | 2007 | 2008 | Ovechkin | 65 | 40 | 63% |
10 | 1999 | 2000 | Bure | 58 | 36 | 61% |
11 | 2014 | 2015 | Ovechkin | 53 | 33 | 61% |
12 | 1989 | 1990 | Jull Jr | 72 | 45 | 60% |
13 | 1984 | 1985 | Gretzky | 73 | 46 | 59% |
14 | 1997 | 1998 | Bondra | 52 | 33 | 58% |
15 | 2012 | 2013 | Ovechkin | 32 | 21 | 52% |
16 | 2015 | 2016 | Ovechkin | 50 | 33 | 52% |
17 | 2013 | 2014 | Ovechkin | 51 | 34 | 50% |
18 | 1977 | 1978 | Lafleur | 60 | 40 | 50% |
19 | 1982 | 1983 | Gretzky | 71 | 48 | 48% |
20 | 1985 | 1986 | Kurri | 68 | 46 | 48% |
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People Like Hull or Gretzky having 2 more dominant seasons than Ovi doesn't really compensate for how Ovi had 5-6+ in the top 20