Only considering weight that's located on the outer edge of the tire and only for the hypothetical case when almost all of your energy is going into acceleration of the bike (as opposed to overcoming gravity, air resistance, mechanical losses, etc.), then the ratio would be 2:1. But since in the course of a typical ride only a few percent of your energy goes into actual acceleration of the bike the effective factor is much, much closer to 1:1, more like 1.05:1.00. OTOH, in a race where the outcome depends on the final sprint then acceleration plays more of a role, so there the ratio edges a little closer to the hypothetical 2:1.