[justinsaccount]

I'm not an expert on either of those, but I don't think that your ERB version does the same thing. If delta is not set, the react version renders something like

    <div class="card">
        title
    </div>

If it is set, it renders something like

    <div class="card">
        <strong class="text-success"> delta </strong>
        title
    </div>

Your version appears to render

    <div class="card">
        <strong class="text-success">
            title
        </strong>
    </div>