I don't have one of those props -all my props in that size are the electric s so I can't see the static thrust at 10,700rpm At 4350 ft elevation - i doubt static thrust is that high - just a guess
in looking at comparitive thrust - you must use identical props
when we were doing static thrust tests on the 26 Evolution - we heard all kinds of claims on thrust on various 25/26 gassers - the Evolution using a really good exhaust system-beat em all - we used 18x6 props which allowed 8500 on the ground. 10000 plus in the air on the Showtimes.
the basic layout of the 10 is better than the little reed valve engines