check the others - scoobies are lumpy on idle anyway but if this is something you are not familiar with its looking like something different, I believe the compression test is a red herring in itself unless something else has been disturbed putting the tool in place and removal etc.
Try disconnecting the maf as its an easy check although as you have changed it recently it is probably not the cause.
when doing the compression test all valves - throttle etc should be open to get the air in when cranking the engine - has anything been disconnected in order to make that happen?