noun
question of degree; matter of degree
Used when the issue is not about whether something exists, but about how much or to what extent. Often appears in phrases like 程度問題だ (it's a matter of degree).
成功するかどうかは努力の程度問題だ。
Whether you succeed or not is a matter of how much effort you put in.
この問題は善悪ではなく
This issue is not about right or wrong, but a question of degree.