It’s now possible to see your power as watts per a kilogram on the power curve.
You’ll first want to add your weight, and then you can click on the W/kg button at the top right of the graph and the values are shown as watts per a kilogram. This doesn’t yet support different weights over time, so old powers won’t be shown accurately if your weight has changed much.
For reference, here’s a handy table that Andrew Coggan put together showing what power outputs cyclists tend to be able to produce. You should probably also read Andrew Coggan’s explanation of the table.
This is the blog of Cycling Analytics, a website that exists to help people analyse their rides and manage their training. You might be interested in following via Facebook or Twitter. Also, I'm on Twitter as @cyclist_dave.