A tenanted sale needs the existing lease reviewed against the Residential Tenancies Act, 2006 to confirm it transfers cleanly, and a documented rent roll helps an investor underwrite the income rather than guess at it.
A vacant sale opens the buyer pool to owner-occupiers and first-time buyers who cannot or will not take on a tenant, which can mean more competing offers even though it costs you rental income during the listing period.
Which path nets more depends on Willowgrove's current buyer mix, not a fixed rule. Get your hand-reviewed valuation from Joel Dyck.