If the gasket were "blown" that badly in all four cylinders, surely there would be a "hissing" noise very obvious.
I suspect the rockers are too tight on that side. You can put an air fitting on the end of your compression tester hose and plug air into the cylinder. Listen to where it comes out (carb or throttle body, exhaust or up through the pushrod area). If it's the cabr/TB, loosen the intake rocker and see if it lessens. Same with exhaust. If you hear it plainly but loosening doesn't "help", pull the head....
WIth numbers that "low", I would believe if rings, the wrong size rings were installed. That WILL "come up" significantly when you squirt oil in it (use heavier engine oil, "liberally").
Numbers on the other side are pretty normal for a "hot" cam. The lift number is nice to know, but the duration tells us a lot more about the cam. The "@.050" numbers are the best to use for general comparison. LSA (Lobe Separation Angle) is also important.