A trial judge is not required to give a detailed explanation of why he or she arrived at one number (say, 3 ½ years custody), as opposed to another (say, 2 or 2 ½ years custody), apart from justifying why the sentence is fit in the circumstances of the case, having regard to all the principles of sentencing: see  R. v. Anang, 2016 ONCA 825.

I take from this that an appellate court will give some deference to the trial judge’s location of a sentence so long as it falls within the appropriate sentencing range.