John Gill Commentary Judges 8:3

"God hath delivered into your hand the princes of Midian, Oreb and Zeeb: and what was I able to do in comparison with you? Then their anger was abated toward him, when he had said that." — Judges 8:3 (ASV)

God has delivered into your hands the princes of Midian, Oreb
and Zeeb
A high honour this conferred upon you, and with which you may be well contented:

and what was I able to do in comparison of you ?
what he had done in defeating and pursuing the army of Midian, in slaying and taking any of them prisoners, was nothing in comparison of what they had done; nay, he signifies that he was not capable of doing anything worth mentioning without them; the glory of finishing this conquest was reserved for them:

then their anger was abated towards him when he had said that ;
it being what gratified their pride and was pleasing to them; and this conduct of Gideon showed him to be a wise and humble man.