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.
Ensures the pushrod ends and adjusters don't get smoked. Without pushrod oiling, it happens, especially with cheap roller rockers. I ran a set of alum prw 1.5 roller rockers in a 318 with solid pushrods and the ball cups showed significant wear vs my now hollow rods that still look like new.
If your rockers don't give a place for the oil to to from the pushrod, the amount of flow will be hampered quite a bit, and won't be an issue.
With a cam that small, it's unlikely the engine will be running revs where oil on the crank and rods will be a concern. Besides, the crank will have most of the sump whipped up anyway.. Any small 'extra' amount won't amount to anything measurable.
Might be a different story if you are planning to run a scraper or whiz bang oil pan - but that cam suggests it wouldn't be needed anyway?
More details about intended use and other parts of the build might clarify though.
