Disappointing dyno results

jawbone said
Big valve "O" heads, flat top JE pistons with 2 valve reliefs. Calculated 9.687:1 compression, dynamic at 11.103. cc"d at 65.6 Compression check at 150 after 5 revs.

jawbone said
Compression check was 160-170.

Which one is it? 150, or 160-170? Did it change overnight?

And how is the dynamic compression higher than the static?