Well I am a big guy, maybe like 205 or so, not really sure, Haven't had any problems with any other bikes, might still be a bit heavy for the bike. Spoke coun't is high I think. Haven't done alot of sprinting or climbing. As for power I would say a little below average, maybe about 13 MPH on your average 3 hour ride.
I found it a bit strange when I noticed the spoke missing, I was upset since it is a brand new bike.