The wide LSA is to keep overlap and reversion to a minimum, you want to use the boost to push the piston down, and not let the exhaust back into the chamber or intake charge. When LSA is narrower, overlap is larger. (all other numbers being equal)

11.48 @ 120 with a 1.80 60' 318, stock 1.88 heads, stock 904, Pump Gas, 13 lbs of boost.

9.94 @ 134, 318 on pump gas, 14 lbs w/ Eddies, transbrake 727, 3600 lbs, 3.54 gear and 28's.