Oh. hands down is an expression that means that something is easily better than something else; that a comparison or competition between two things is uncontested.

• 噢，我明白了。你是说这件灰色西装比其它的都强得多，根本没有好比较的。你说的不错，那套棕色的好像有点儿容易皱，黑色的看起来又太一般了。这件灰色的样子确实不错。