Try looking through the scriptures for support for that theory; it isn't there. The Lord's victories will be his own, not through men.
Try reading all the many ways Psalm 110 is cited in the Bible, including the I Cor. 15 reference I offered.
So God offered His people victories in the OT, but calls us to suck it up and be good losers in the NT? Are you really sure that's what you consider by "good" news? Let me recommend Psalm 95, which is cited several times in the Epistle to the Hebrews: "Today, if you would hear His voice, harden not your hearts, as your fathers did. And their corpses fell in the desert."
Soften your heart towards God, and He may have an encouraging word for you! If you are willing and obedient and trust Him.