+- 5 psi between all cylinders and 120 psi cold cranking compression would be great.
Below 100 psi on any cylinder would concern me. If any two cylinders next to each other are both low might indicate a blown or leaking head gasket. My 2003 EFI 150 is still setting on 125 all holes. A 200hp merc should be about the same if it is a 2.5L v6 engine.
Infidel and proud of it.
From Genesis: "And God promised men that good and obedient wives would be found in all corners of the earth."
Then He made the earth round...and He laughed and laughed and laughed!