I'm not a big fan of engine oil testing like this. I worked in an oil testing lab for a few years and I don't bother with it. If results are about average, great. If not, how far off is too far? I wouldn't trust their options. Thier goal is to get you to keep testing, not offer real advice about your motor. (Many of those 'wear' metals are actually in fresh, unused oil and I suspect filter media has a big effect as well.)
You would really need to test way more often than once an oil change and then you would need similar motorS to compare to.
Fuel, coolant, soot and water contamination are what you need to worry about.
1. Make sure there is oil in the engine (check it between changes)
2. Change it periodically (I change it when the dash says percent life is about 25%)
3. I used to say conventional is good enough - but with the timing chain 'stretch' in these motors from microscopic wear, I use synthetic. (Castrol Edge is cheap at Walmart in the 5 quart jugs).
I hope this helps.