Hydraulic roller lifter questions (LA 318)

The Morel lifters work great. Pushrod oiling is BETTER than block to shaft oiling....thats why Mopar went to pushrod oiling in the magnum blocks.
How is it "better"? Besides, my heads are LA so the rockers are oiled through the rocker shafts. Any extra oil coming out the top of the lifters is wasted. In fact, worse than wasted since it dumps onto the crank and rods, increasing windage.