The recommendation on the lower performance equipment is that you will be able to use them more effectively, and more often than a high end piece. A high end premium ball is tailored more toward Sport Shots, and Tournament patterns. A premium ball usually needs a large amount of oil to perform like it is intended. If you get a ball too strong, it could lose energy and not perform well at all. in other words, you could spend $250 on a top shelf ball, that will not perform on what you bowl on, but a $175 ball is a better option.
Oil coverage on the lanes are determined by the oiling machine set-up. There are tons of other variances that could be listed as well.
My opinion, all manufacturers have great entry level pieces. I am a non-staffer working outside the industry and have used many different brands, but what will work for me, a high speed stroker, may not work for your two handed higher rev style. I am a "straighter is greater" mentality.