Is the rating on chessboss.com reliable?

[Event "16m game"]
[Site "chessboss.com"]
[Date "2010.04.26"]
[Round "?"]
[White "Marco Saba (1987)"]
[Black "Georgy Agzamov (2866)"]
[Result "1-0"]

1.e4 Nf6 2.e5 Ne4 3.Nc3 d5 4.Nxe4 dxe4 5.d3 Qd5 6.d4 Nc6 7.Be3 a6 8.c4 Qa5+ 9.Bd2 Qb6 10.Bc3 Be6 11.d5 e3 12.fxe3 O-O-O 13.Qf3 Nb4 14.Qe2 Bf5 15.e4 Bg6 16.Nf3 Bh5 17.a3 Nc6 18.dxc6 Qxc6 19.h3 e6 20.b4 Bg6 21.Nd2 Be7 22.Kf2 h6 23.g3 Kb8 24.Bg2 Bg5 25.Nb3 Qb6+ 26.c5 Qb5 27.Qxb5 axb5 28.Rad1 h5 29.h4 Bh6 30.Rd4 Rdf8 31.Rhd1 Kc8 32.c6 bxc6 33.Na5 c5 34.bxc5 f6 35.exf6 Rxf6+ 36.Ke1 Be3 37.Rd7 Bf2+ 38.Ke2 Bxc5 39.Bxf6 gxf6 40.e5 Bxa3 41.Nc6 Bf5 42.exf6 Bd6 43.R7xd6 cxd6 44.Rxd6 Kc7 45.Rd4 Rf8 46.Rb4 Kb6 47.Ne5 Rxf6 48.Nd7+ Ka5 49.Rxb5+ Kxb5 50.Nxf6 Bg6 51.Bf3 Kc5 52.Bxh5 Bxh5+ 53.Nxh5 Kd6 54.Ke3 Ke5 55.g4 Kd6 56.Ke4 Kc5 57.Ke5 Kb4 58.g5 Kc5 59.g6 Kb6 60.g7 Kc5 61.g8=Q Kb5 62.Qxe6 Kb4 63.Qc6 Kb3 64.Qe4 Kc3 65.Qd4+ Kb3 66.Qc5 Ka4 67.Qb6 Ka3 68.Kd4 Ka2 69.Kc3 Ka3 70.Qb3# *