What real difference does the lsa on a cam make?

BTW, narrow LSA=more low end TQ, not less.

I assure you, that is not correct. By both experience as well as computer simulation, I have seen otherwise. A 114 LSA compared to a 108 LSA all things equal makes more torque down low on the desktop dyno every single time....without fail. In fact, it's usually a huge difference. The reason for that is because cylinder pressure bleed off is also RPM dependant. The more RPM, the more cylinder bleed off. A wide LAS will build more cylinder pressure down low in the RPM range. They also generally build more pressure in lower compression (under 9:1) engines. I don't know the whys and wherefores, but that much is true. I have verified it in person with a compression gauge many times. The narrow LSA does indeed take away from bottom end torque.