As someone who does LH, MH and SH I find this idiotic comparison of skills idiotic. I came up through the mill, and find the skills I gained there help me to perform in all environments. I would not want to be 20 years into my career with no tangible back up, which I believe can only be gained by doing your time.
There are certain skills required by each discipline, but a thorough experience base can only help when you have spent too much time drinking coffee and staring at a black windscreen on a LH flight.