Yep she'll be full compression thanks to the fogging....unless there's a hole in the piston. Compression tests can be misleading and while a cylinder may hold 79/80 psi it does so because so much oil is making it past the rings it seals them for the compression test.
And for those that don't understand the 79/80 vs the general compression test gauge where you stick it in the plug hole and crank the engine... I do them by holding a piston at TDC and pressurize with 80 PSI. Generally a good cylinder will hold at least 70 of it. 75/80 is beautiful. 68/80 is when you start looking for problems.