Seeing as you've gone quiet, I'll clarify for you.
w/kg is not a good indicator of racing performance, especially on flat events where weight is not really a factor. FTP is not really a guide to race performance either - although obviously the fitter you are, the better your FTP is likely to be.
For circuit races and flatter road races (ie most of them, at amateur level), your critical factors will be numbers like your 1min and 5min power - in other words, your short/medium term efforts, which typify most circuits, crits and RRs. There are few, if any, amateur races which involve the type of long, steady climbing where w/kg is going to be a major concern.
So, for the kind of racing the lad is likely to be doing, w/kg or (to a lesser extent) FTP, should not really be a concern. Which is why I said the best measure is going to be to get out there and try it.
So, if any of that sounds like the 'wrong message' or 'misinformation' to you, I'd like to know why.