Several things to add:
I read somewhere that she was a champion crit racer back in the day. Not pro tour of course. I wouldn't trust wired
to tell me that Sagan, Cav and Kittel hit 700 watts in the last minute. I think that's too low. I've hit 800-1000 in my own sprints. Granted for like 15 seconds.
If some TDF efforts up climbs are like 5 minutes at 500 watts, I find it hard to believe 700 for 1 minute is a sprinters output. More like 1200-1500 is my guess.
I bolded the key part. I wouldn't trust Wired to tell me anything, including what power she put out.
Given a rough guess she weighs less than I do, 700w for a minute or more puts her over 2w/kg over the top of the women's ftp charts. Like at 11w/kg for a minute where the chart stops at 9.8.
I'm guessing given it's only CRR that somewhere in the range of 350 or so watts was probably required. Not unreasonable for minute for anyone if you put a gun to their head.
You're not going to hold that bike that steady putting out 700w, or 500w. She'd be racking the handlebars.
I'm just betting a Wired employee google'd some bull crap and her people probably ran some crap internet calculator for some "cool" looking power.
Endura in contrast guessed/calculated some pretty darn reasonable power numbers when running the aero on the Obree hour record setups.