Impartial, Sikh guru ji never gave their life to hear from you that you are accepting their sacrifices or not ,they did it as per their prinicipal of not accepting any JULM of any body on any body,as they felt that all humans are ONE GOD's only (EK NOOR TEH SAB JAG UPJAIA)& THEY also made it clear to followers that they were not against ISLAM but those time's crual muslim rulars only. So its upto you now how you interpreat all this history.