I use a Wahoo Element Bolt and a Quarq Dzero PM. The Wahoo simultaneous downloads data to Strava and Training Peaks which is then synced to WKO+. For todays ride the Wahoo and Training Peaks show 1318 for a peak power while Strava and WKO+ show 1284.
I don’t really care about Strava but, the WKO+ (synced to TP) is puzzling. Just wondering why the difference? Algorithm issue? Thanks for any insight.
Trade ya, I could use another 100+ W peak 
p.s. WKO4 will look at peak power for a full spin of the pedals IIRC
I am having the same problem, Quarq Dzero XX1 and Bolt. Bolt’s max power is almost always higher than Strava. I assumed that Strava sees that as a power spike and ignores it through their software. Which is annoying since TR is linked to Strava and pulls the data from there for outside workouts.
Don’t the fit files generated by the Bolt usually have one-second resolution?
Source: 4 Key Uses for the Power Duration Model | TrainingPeaks
I’d file a ticket with TP and ask the question.