Someone who does not believe, for them it seems like victory comes through strength and number. It only seems logical. But we Muslims believe in the unseen and that you can also have the help from Allah. Therefore you might be smaller in number and strength, but Allah might have sent down thousands of angels to help you. This is recorded in the Quran:
There was a token for you in two hosts which met: one army fighting in the way of Allah, and another disbelieving, whom they saw as twice their number, clearly, with their very eyes. Thus Allah strengtheneth with His succour whom He will. Lo! herein verily is a lesson for those who have eyes. (3:13)
When thou didst say unto the believers: Is it not sufficient for you that your Lord should support you with three thousand angels sent down (to your help)? (3:124) Nay, but if ye persevere, and keep from evil, and (the enemy) attack you suddenly, your Lord will help you with five thousand angels sweeping on. (3:125) Allah ordained this only as a message of good cheer for you, and that thereby your hearts might be at rest - Victory cometh only from Allah, the Mighty, the Wise - (3:126)
As a Muslim in a fight you should rely and put their trust on Allah, not on your number and strength.
If Allah is your helper none can overcome you, and if He withdraw His help from you, who is there who can help you after Him? In Allah let believers put their trust. (3:160)
Allah loves those who put their trust in him.